diff --git a/packages/cron-input/src/components/internal/cron-base.vue b/packages/cron-input/src/components/internal/cron-base.vue
index 9081ec3..df5b85a 100644
--- a/packages/cron-input/src/components/internal/cron-base.vue
+++ b/packages/cron-input/src/components/internal/cron-base.vue
@@ -38,7 +38,7 @@ const step = ref([min, 1]);
 const well = ref([min, 1]);
 const specify = ref<number[]>([]);
 const weekday = ref(1);
-const lastDayOfWeek = ref(0);
+const lastDayOfWeek = ref(1);
 const rangeStart = ref<[number, number]>([min, max - 1]);
 const stepLeft = ref<[number, number]>([min, max]);
 const stepRight = ref<[number, number]>([1, max]);
@@ -222,7 +222,7 @@ const onCheckboxGroupChange = () => {
     <div v-if="isLastDayOfWeek" class="cron-radio flex items-center justify-start gap-5px">
       <NRadio v-if="isLastDayOfWeek" :value="TYPE.LAST_DAY" />
       {{ label.lastDayOfWeek }}
-      <InputNumber v-model="lastDayOfWeek" :range="[0, 6]" :field-value="field.value" :locale="locale" />
+      <InputNumber v-model="lastDayOfWeek" :range="[1, 7]" :field-value="field.value" :locale="locale" />
     </div>
     <div class="cron-radio flex flex-wrap items-center justify-start gap-5px">
       <NRadio class="cron-radio" :value="TYPE.SPECIFY">{{ label.specify }}</NRadio>
diff --git a/packages/cron-input/src/shared/constants.ts b/packages/cron-input/src/shared/constants.ts
index 352fdc4..fa01f7b 100644
--- a/packages/cron-input/src/shared/constants.ts
+++ b/packages/cron-input/src/shared/constants.ts
@@ -13,8 +13,8 @@ export const MAX_DATE = 31;
 export const MIN_MONTH = 1;
 export const MAX_MONTH = 12;
 
-export const MIN_WEEK = 0;
-export const MAX_WEEK = 6;
+export const MIN_WEEK = 1;
+export const MAX_WEEK = 7;
 
 export const MIN_YEAR = new Date().getFullYear();
 export const MAX_YEAR = 2099;
@@ -28,13 +28,13 @@ export const FRIDAY = 'friday';
 export const SATURDAY = 'saturday';
 
 export const WEEKS = [
-  { value: SUNDAY, abbr: 'SUN', index: '0' },
-  { value: MONDAY, abbr: 'MON', index: '1' },
-  { value: TUESDAY, abbr: 'TUE', index: '2' },
-  { value: WEDNESDAY, abbr: 'WED', index: '3' },
-  { value: THURSDAY, abbr: 'THU', index: '4' },
-  { value: FRIDAY, abbr: 'FRI', index: '5' },
-  { value: SATURDAY, abbr: 'SAT', index: '6' }
+  { value: SUNDAY, abbr: 'SUN', index: '1' },
+  { value: MONDAY, abbr: 'MON', index: '2' },
+  { value: TUESDAY, abbr: 'TUE', index: '3' },
+  { value: WEDNESDAY, abbr: 'WED', index: '4' },
+  { value: THURSDAY, abbr: 'THU', index: '5' },
+  { value: FRIDAY, abbr: 'FRI', index: '6' },
+  { value: SATURDAY, abbr: 'SAT', index: '7' }
 ];
 
 export const WEEK_INDEX_REGEXP = new RegExp(WEEKS.map(({ index }) => `(?<!#)${index}`).join('|'), 'g');