diff --git a/pages/detail/detail.vue b/pages/detail/detail.vue
index 150ac6a..db7259d 100755
--- a/pages/detail/detail.vue
+++ b/pages/detail/detail.vue
@@ -580,12 +580,9 @@ const resetTransactionForm = () => {
 };
 
 const onDateChange = (e) => {
-  const date = new Date(e.value);
-  const year = date.getFullYear();
-  const month = String(date.getMonth() + 1).padStart(2, '0');
-  const day = String(date.getDate()).padStart(2, '0');
-  transactionForm.value.transactionDate = `${year}-${month}-${day}`;
-  transactionForm.value.dateTimestamp = e.value;
+  // 原生 picker 直接返回日期字符串 YYYY-MM-DD
+  transactionForm.value.transactionDate = e.detail.value;
+  transactionForm.value.dateTimestamp = new Date(e.detail.value).getTime();
 };
 
 const submitTransaction = async () => {