diff --git a/backend/internal/handler/admin/channel_handler.go b/backend/internal/handler/admin/channel_handler.go
index dc0e5b07e2..c1b3507aef 100644
--- a/backend/internal/handler/admin/channel_handler.go
+++ b/backend/internal/handler/admin/channel_handler.go
@@ -74,8 +74,9 @@ type channelModelPricingRequest struct {
 }
 
 type channelTimePricingRequest struct {
-	Timezone string                            `json:"timezone"`
-	Periods  []channelTimePricingPeriodRequest `json:"periods"`
+	Timezone     string                            `json:"timezone"`
+	WeekdaysOnly bool                              `json:"weekdays_only"`
+	Periods      []channelTimePricingPeriodRequest `json:"periods"`
 }
 
 type channelTimePricingPeriodRequest struct {
@@ -144,8 +145,9 @@ type channelModelPricingResponse struct {
 }
 
 type channelTimePricingResponse struct {
-	Timezone string                             `json:"timezone"`
-	Periods  []channelTimePricingPeriodResponse `json:"periods"`
+	Timezone     string                             `json:"timezone"`
+	WeekdaysOnly bool                               `json:"weekdays_only"`
+	Periods      []channelTimePricingPeriodResponse `json:"periods"`
 }
 
 type channelTimePricingPeriodResponse struct {
@@ -282,7 +284,11 @@ func timePricingToResponse(value *service.ChannelTimePricing) *channelTimePricin
 			Multiplier: period.Multiplier,
 		})
 	}
-	return &channelTimePricingResponse{Timezone: value.Timezone, Periods: periods}
+	return &channelTimePricingResponse{
+		Timezone:     value.Timezone,
+		WeekdaysOnly: value.WeekdaysOnly,
+		Periods:      periods,
+	}
 }
 
 func intervalToResponse(iv service.PricingInterval) pricingIntervalResponse {
@@ -374,7 +380,11 @@ func timePricingRequestToService(value *channelTimePricingRequest) *service.Chan
 			Multiplier: period.Multiplier,
 		})
 	}
-	return &service.ChannelTimePricing{Timezone: value.Timezone, Periods: periods}
+	return &service.ChannelTimePricing{
+		Timezone:     value.Timezone,
+		WeekdaysOnly: value.WeekdaysOnly,
+		Periods:      periods,
+	}
 }
 
 func accountStatsPricingRuleRequestToService(r accountStatsPricingRuleRequest) service.AccountStatsPricingRule {
diff --git a/backend/internal/handler/admin/channel_handler_test.go b/backend/internal/handler/admin/channel_handler_test.go
index 75aec7db31..2da7e02d00 100644
--- a/backend/internal/handler/admin/channel_handler_test.go
+++ b/backend/internal/handler/admin/channel_handler_test.go
@@ -426,7 +426,8 @@ func TestPricingRequestToService_TimePricing(t *testing.T) {
 		Models:      []string{"gpt-5"},
 		BillingMode: "token",
 		TimePricing: &channelTimePricingRequest{
-			Timezone: "Asia/Shanghai",
+			Timezone:     "Asia/Shanghai",
+			WeekdaysOnly: true,
 			Periods: []channelTimePricingPeriodRequest{{
 				StartTime: "09:00", EndTime: "12:00", Multiplier: 2,
 			}},
@@ -435,6 +436,7 @@ func TestPricingRequestToService_TimePricing(t *testing.T) {
 
 	got := pricingRequestToService([]channelModelPricingRequest{req}, true)
 	require.Equal(t, "Asia/Shanghai", got[0].TimePricing.Timezone)
+	require.True(t, got[0].TimePricing.WeekdaysOnly)
 	require.Equal(t, 2.0, got[0].TimePricing.Periods[0].Multiplier)
 }
 
@@ -483,7 +485,8 @@ func TestPricingToResponse_TimePricing(t *testing.T) {
 	got := pricingToResponse(&service.ChannelModelPricing{
 		BillingMode: service.BillingModeToken,
 		TimePricing: &service.ChannelTimePricing{
-			Timezone: "Asia/Shanghai",
+			Timezone:     "Asia/Shanghai",
+			WeekdaysOnly: true,
 			Periods: []service.ChannelTimePricingPeriod{{
 				StartTime: "14:00", EndTime: "18:00", Multiplier: 1.25,
 			}},
@@ -492,6 +495,7 @@ func TestPricingToResponse_TimePricing(t *testing.T) {
 
 	require.NotNil(t, got.TimePricing)
 	require.Equal(t, "Asia/Shanghai", got.TimePricing.Timezone)
+	require.True(t, got.TimePricing.WeekdaysOnly)
 	require.Equal(t, 1.25, got.TimePricing.Periods[0].Multiplier)
 }
 
diff --git a/backend/internal/service/channel.go b/backend/internal/service/channel.go
index 0fe4e3b07c..3e300edf99 100644
--- a/backend/internal/service/channel.go
+++ b/backend/internal/service/channel.go
@@ -109,8 +109,9 @@ type ChannelModelPricing struct {
 
 // ChannelTimePricing 渠道模型定价的分时倍率配置。
 type ChannelTimePricing struct {
-	Timezone string                     `json:"timezone"`
-	Periods  []ChannelTimePricingPeriod `json:"periods"`
+	Timezone     string                     `json:"timezone"`
+	WeekdaysOnly bool                       `json:"weekdays_only,omitempty"`
+	Periods      []ChannelTimePricingPeriod `json:"periods"`
 }
 
 // ChannelTimePricingPeriod 是秒级的左闭右开分时倍率区间，并兼容历史 HH:mm 数据。
@@ -216,7 +217,10 @@ func (p ChannelModelPricing) Clone() ChannelModelPricing {
 		copy(cp.Intervals, p.Intervals)
 	}
 	if p.TimePricing != nil {
-		cp.TimePricing = &ChannelTimePricing{Timezone: p.TimePricing.Timezone}
+		cp.TimePricing = &ChannelTimePricing{
+			Timezone:     p.TimePricing.Timezone,
+			WeekdaysOnly: p.TimePricing.WeekdaysOnly,
+		}
 		if p.TimePricing.Periods != nil {
 			cp.TimePricing.Periods = append([]ChannelTimePricingPeriod(nil), p.TimePricing.Periods...)
 		}
diff --git a/backend/internal/service/channel_test.go b/backend/internal/service/channel_test.go
index 19e45a02db..42c2c46448 100644
--- a/backend/internal/service/channel_test.go
+++ b/backend/internal/service/channel_test.go
@@ -198,7 +198,8 @@ func TestChannelModelPricingClone(t *testing.T) {
 			{MinTokens: 0, TierLabel: "tier1"},
 		},
 		TimePricing: &ChannelTimePricing{
-			Timezone: "Asia/Shanghai",
+			Timezone:     "Asia/Shanghai",
+			WeekdaysOnly: true,
 			Periods: []ChannelTimePricingPeriod{{
 				StartTime:  "09:00",
 				EndTime:    "12:00",
@@ -217,9 +218,11 @@ func TestChannelModelPricingClone(t *testing.T) {
 	require.Equal(t, "tier1", original.Intervals[0].TierLabel)
 
 	cloned.TimePricing.Timezone = "America/New_York"
+	cloned.TimePricing.WeekdaysOnly = false
 	cloned.TimePricing.Periods[0].StartTime = "10:00"
 	cloned.TimePricing.Periods[0].Multiplier = 3
 	require.Equal(t, "Asia/Shanghai", original.TimePricing.Timezone)
+	require.True(t, original.TimePricing.WeekdaysOnly)
 	require.Equal(t, "09:00", original.TimePricing.Periods[0].StartTime)
 	require.Equal(t, 2.0, original.TimePricing.Periods[0].Multiplier)
 }
diff --git a/backend/internal/service/custom_channel_time_pricing.go b/backend/internal/service/custom_channel_time_pricing.go
index 759eac987e..5b7ce8eb3d 100644
--- a/backend/internal/service/custom_channel_time_pricing.go
+++ b/backend/internal/service/custom_channel_time_pricing.go
@@ -47,6 +47,9 @@ func (config *ChannelTimePricing) MultiplierAt(at time.Time) float64 {
 	}
 
 	local := at.In(location)
+	if config.WeekdaysOnly && (local.Weekday() == time.Saturday || local.Weekday() == time.Sunday) {
+		return 1.0
+	}
 	second := local.Hour()*60*60 + local.Minute()*60 + local.Second()
 	for _, period := range periods {
 		if second >= period.start && second < period.end {
diff --git a/backend/internal/service/custom_channel_time_pricing_test.go b/backend/internal/service/custom_channel_time_pricing_test.go
index f1038af0d3..f36c19b7c9 100644
--- a/backend/internal/service/custom_channel_time_pricing_test.go
+++ b/backend/internal/service/custom_channel_time_pricing_test.go
@@ -95,6 +95,30 @@ func TestChannelTimePricingMultiplierAt(t *testing.T) {
 	require.Equal(t, 2.0, newYork.MultiplierAt(at))
 }
 
+func TestChannelTimePricingMultiplierAtWeekdaysOnly(t *testing.T) {
+	config := &ChannelTimePricing{
+		Timezone:     "Asia/Shanghai",
+		WeekdaysOnly: true,
+		Periods:      onePeriod(),
+	}
+
+	tests := []struct {
+		name string
+		at   time.Time
+		want float64
+	}{
+		{name: "Monday in configured timezone", at: time.Date(2026, 6, 29, 1, 0, 0, 0, time.UTC), want: 2},
+		{name: "Saturday in configured timezone", at: time.Date(2026, 7, 4, 1, 0, 0, 0, time.UTC), want: 1},
+		{name: "Sunday in configured timezone", at: time.Date(2026, 7, 5, 1, 0, 0, 0, time.UTC), want: 1},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			require.Equal(t, tt.want, config.MultiplierAt(tt.at))
+		})
+	}
+}
+
 func TestChannelTimePricingMultiplierAtSecondPrecision(t *testing.T) {
 	config := timeConfig(ChannelTimePricingPeriod{StartTime: "09:00:30", EndTime: "09:00:45", Multiplier: 2})
 	shanghai, err := time.LoadLocation("Asia/Shanghai")
diff --git a/frontend/src/api/admin/channels.ts b/frontend/src/api/admin/channels.ts
index 9ce50bcd0a..94967e3692 100644
--- a/frontend/src/api/admin/channels.ts
+++ b/frontend/src/api/admin/channels.ts
@@ -33,6 +33,7 @@ export interface ChannelTimePricingPeriod {
 
 export interface ChannelTimePricing {
   timezone: string
+  weekdays_only?: boolean
   periods: ChannelTimePricingPeriod[]
 }
 
diff --git a/frontend/src/components/admin/channel/TimePricingSection.vue b/frontend/src/components/admin/channel/TimePricingSection.vue
index b2e31ca46d..ae329f3680 100644
--- a/frontend/src/components/admin/channel/TimePricingSection.vue
+++ b/frontend/src/components/admin/channel/TimePricingSection.vue
@@ -1,22 +1,40 @@
 <template>
   <section class="mt-3 border-t border-gray-200 pt-3 dark:border-dark-600">
     <div class="flex flex-col gap-2 sm:flex-row sm:items-end sm:justify-between">
-      <div class="min-w-0 flex-1 sm:max-w-sm">
+      <div class="min-w-0 flex-1 sm:max-w-2xl">
         <label class="block text-xs font-medium text-gray-500 dark:text-gray-400">
           {{ t('admin.channels.form.timePricing') }}
         </label>
-        <label class="mt-2 block text-xs text-gray-400">
-          {{ t('admin.channels.form.timezone') }}
-        </label>
-        <Select
-          :model-value="modelValue.timezone"
-          :options="timezoneOptions"
-          :aria-label="t('admin.channels.form.timezone')"
-          searchable
-          creatable
-          class="mt-1 w-full"
-          @update:model-value="updateTimezone"
-        />
+        <div class="mt-2 grid grid-cols-1 gap-2 sm:grid-cols-2">
+          <div class="min-w-0">
+            <label class="block text-xs text-gray-400">
+              {{ t('admin.channels.form.timezone') }}
+            </label>
+            <Select
+              :model-value="modelValue.timezone"
+              :options="timezoneOptions"
+              :aria-label="t('admin.channels.form.timezone')"
+              data-testid="time-pricing-timezone"
+              searchable
+              creatable
+              class="mt-1 w-full"
+              @update:model-value="updateTimezone"
+            />
+          </div>
+          <div class="min-w-0">
+            <label class="block text-xs text-gray-400">
+              {{ t('admin.channels.form.timePricingDayScope') }}
+            </label>
+            <Select
+              :model-value="modelValue.weekdays_only"
+              :options="dayScopeOptions"
+              :aria-label="t('admin.channels.form.timePricingDayScope')"
+              data-testid="time-pricing-day-scope"
+              class="mt-1 w-full"
+              @update:model-value="updateDayScope"
+            />
+          </div>
+        </div>
       </div>
       <button
         type="button"
@@ -99,7 +117,7 @@
 </template>
 
 <script setup lang="ts">
-import { getCurrentInstance } from 'vue'
+import { computed, getCurrentInstance } from 'vue'
 import { useI18n } from 'vue-i18n'
 import Select from '@/components/common/Select.vue'
 import Icon from '@/components/icons/Icon.vue'
@@ -122,10 +140,19 @@ const timezoneOptions = COMMON_TIMEZONES.map(value => {
   return { value, label: offset ? `${value} (${offset})` : value }
 })
 
+const dayScopeOptions = computed(() => [
+  { value: false, label: t('admin.channels.form.timePricingEveryDay') },
+  { value: true, label: t('admin.channels.form.timePricingWeekdaysOnly') },
+])
+
 function updateTimezone(value: string | number | boolean | null) {
   emit('update:modelValue', { ...props.modelValue, timezone: String(value ?? '') })
 }
 
+function updateDayScope(value: string | number | boolean | null) {
+  emit('update:modelValue', { ...props.modelValue, weekdays_only: value === true })
+}
+
 function normalizeClockTime(value: string): string {
   const normalized = value.replace(/：/g, ':')
   return normalized === '24:00:00' ? '00:00:00' : normalized
diff --git a/frontend/src/components/admin/channel/__tests__/TimePricingSection.spec.ts b/frontend/src/components/admin/channel/__tests__/TimePricingSection.spec.ts
index 5ce5348a27..1b6fd27be7 100644
--- a/frontend/src/components/admin/channel/__tests__/TimePricingSection.spec.ts
+++ b/frontend/src/components/admin/channel/__tests__/TimePricingSection.spec.ts
@@ -12,7 +12,7 @@ const SelectStub = {
   name: 'Select',
   props: ['modelValue', 'options'],
   emits: ['update:modelValue'],
-  template: '<button type="button" data-testid="timezone-select" />',
+  template: '<button type="button" v-bind="$attrs" />',
 }
 
 describe('TimePricingSection', () => {
@@ -20,6 +20,28 @@ describe('TimePricingSection', () => {
     vi.clearAllMocks()
   })
 
+  it('offers every-day and weekdays-only scopes', async () => {
+    const value = createDefaultTimePricingForm()
+    const wrapper = mount(TimePricingSection, {
+      props: { modelValue: value },
+      global: { stubs: { Select: SelectStub, Icon: true } },
+    })
+
+    const selects = wrapper.findAllComponents(SelectStub)
+    expect(selects).toHaveLength(2)
+    expect(selects[1].props('modelValue')).toBe(false)
+    expect(selects[1].props('options')).toEqual([
+      { value: false, label: 'admin.channels.form.timePricingEveryDay' },
+      { value: true, label: 'admin.channels.form.timePricingWeekdaysOnly' },
+    ])
+
+    selects[1].vm.$emit('update:modelValue', true)
+    expect(wrapper.emitted('update:modelValue')?.[0]?.[0]).toEqual({
+      ...value,
+      weekdays_only: true,
+    })
+  })
+
   it('adds a neutral period immutably', async () => {
     const value = createDefaultTimePricingForm()
     const wrapper = mount(TimePricingSection, {
@@ -31,6 +53,7 @@ describe('TimePricingSection', () => {
 
     expect(wrapper.emitted('update:modelValue')?.[0]?.[0]).toEqual({
       timezone: 'Asia/Shanghai',
+      weekdays_only: false,
       periods: [{ start_time: '', end_time: '', multiplier: '1.00' }],
     })
     expect(value.periods).toHaveLength(0)
diff --git a/frontend/src/components/admin/channel/__tests__/types.spec.ts b/frontend/src/components/admin/channel/__tests__/types.spec.ts
index 14430e736f..58b5724239 100644
--- a/frontend/src/components/admin/channel/__tests__/types.spec.ts
+++ b/frontend/src/components/admin/channel/__tests__/types.spec.ts
@@ -146,15 +146,24 @@ describe('validateIntervals', () => {
 describe('time pricing', () => {
   it('uses a disabled Shanghai default', () => {
     const form = createDefaultTimePricingForm()
-    expect(form).toEqual({ timezone: 'Asia/Shanghai', periods: [] })
+    expect(form).toEqual({ timezone: 'Asia/Shanghai', periods: [], weekdays_only: false })
     expect(formTimePricingToAPI(form)).toBeNull()
   })
 
-  it('round-trips and formats multiplier', () => {
-    const form = apiTimePricingToForm({
+  it('defaults missing API day scope to every day', () => {
+    expect(apiTimePricingToForm({
       timezone: 'Asia/Shanghai',
       periods: [{ start_time: '09:00', end_time: '12:00', multiplier: 2 }],
+    }).weekdays_only).toBe(false)
+  })
+
+  it('round-trips day scope and formats multiplier', () => {
+    const form = apiTimePricingToForm({
+      timezone: 'Asia/Shanghai',
+      weekdays_only: true,
+      periods: [{ start_time: '09:00', end_time: '12:00', multiplier: 2 }],
     })
+    expect(form.weekdays_only).toBe(true)
     expect(form.periods[0]).toEqual({
       start_time: '09:00:00',
       end_time: '12:00:00',
@@ -162,6 +171,7 @@ describe('time pricing', () => {
     })
     expect(formTimePricingToAPI(form)).toEqual({
       timezone: 'Asia/Shanghai',
+      weekdays_only: true,
       periods: [{ start_time: '09:00:00', end_time: '12:00:00', multiplier: 2 }],
     })
   })
diff --git a/frontend/src/components/admin/channel/types.ts b/frontend/src/components/admin/channel/types.ts
index a6b5695ddc..42509482fa 100644
--- a/frontend/src/components/admin/channel/types.ts
+++ b/frontend/src/components/admin/channel/types.ts
@@ -42,6 +42,7 @@ export interface TimePricingPeriodFormEntry {
 
 export interface TimePricingFormEntry {
   timezone: string
+  weekdays_only: boolean
   periods: TimePricingPeriodFormEntry[]
 }
 
@@ -66,13 +67,14 @@ export const COMMON_TIMEZONES = [
 ]
 
 export function createDefaultTimePricingForm(): TimePricingFormEntry {
-  return { timezone: DEFAULT_TIME_PRICING_TIMEZONE, periods: [] }
+  return { timezone: DEFAULT_TIME_PRICING_TIMEZONE, weekdays_only: false, periods: [] }
 }
 
 export function apiTimePricingToForm(value: ChannelTimePricing | null | undefined): TimePricingFormEntry {
   if (!value) return createDefaultTimePricingForm()
   return {
     timezone: value.timezone || DEFAULT_TIME_PRICING_TIMEZONE,
+    weekdays_only: value.weekdays_only === true,
     periods: (value.periods || []).map(period => ({
       start_time: LEGACY_CLOCK_TIME.test(period.start_time) ? `${period.start_time}:00` : period.start_time,
       end_time: LEGACY_CLOCK_TIME.test(period.end_time) ? `${period.end_time}:00` : period.end_time,
@@ -86,6 +88,7 @@ export function formTimePricingToAPI(value: TimePricingFormEntry | null | undefi
   const timezone = typeof value.timezone === 'string' ? value.timezone.trim() : ''
   return {
     timezone,
+    weekdays_only: value.weekdays_only === true,
     periods: value.periods.map(period => ({
       start_time: period.start_time,
       end_time: period.end_time,
diff --git a/frontend/src/i18n/locales/en/admin/channels.ts b/frontend/src/i18n/locales/en/admin/channels.ts
index 48ad1f0b63..404bcc17d1 100644
--- a/frontend/src/i18n/locales/en/admin/channels.ts
+++ b/frontend/src/i18n/locales/en/admin/channels.ts
@@ -140,6 +140,9 @@ export default {
         intervals: 'Context Intervals (optional)',
         timePricing: 'Time-based pricing (optional)',
         timezone: 'Time zone',
+        timePricingDayScope: 'Effective days',
+        timePricingEveryDay: 'Every day (Monday-Sunday, including weekends)',
+        timePricingWeekdaysOnly: 'Weekdays only (Monday-Friday)',
         addTimePeriod: 'Add period',
         startTime: 'Start time',
         endTime: 'End time',
diff --git a/frontend/src/i18n/locales/zh/admin/channels.ts b/frontend/src/i18n/locales/zh/admin/channels.ts
index b7beb0398f..12272becd1 100644
--- a/frontend/src/i18n/locales/zh/admin/channels.ts
+++ b/frontend/src/i18n/locales/zh/admin/channels.ts
@@ -140,6 +140,9 @@ export default {
         intervals: '上下文区间定价（可选）',
         timePricing: '时间段定价（可选）',
         timezone: '时区',
+        timePricingDayScope: '生效日',
+        timePricingEveryDay: '每日生效（周一至周日，含周末）',
+        timePricingWeekdaysOnly: '仅工作日生效（周一至周五）',
         addTimePeriod: '添加时间段',
         startTime: '开始时间',
         endTime: '结束时间',