diff --git a/apps/web/src/components/QuickEntryDrawer.vue b/apps/web/src/components/QuickEntryDrawer.vue
index 142ff43..d92234d 100644
--- a/apps/web/src/components/QuickEntryDrawer.vue
+++ b/apps/web/src/components/QuickEntryDrawer.vue
@@ -76,7 +76,9 @@ const selectedLedgerLabel = computed(() => {
   const names = visibleNames.slice(0, 3).join(",");
   return visibleNames.length > 1 ? `${names} 等 ${visibleNames.length} 个账本` : names;
 });
+const occurredAtValid = computed(() => Boolean(occurredAt.value) && !Number.isNaN(new Date(occurredAt.value).getTime()));
 const dateLabel = computed(() => {
+  if (!occurredAtValid.value) return "选择时间";
   const date = new Date(occurredAt.value);
   const now = new Date();
   const datePart = isSameDay(date, now)
@@ -84,6 +86,10 @@ const dateLabel = computed(() => {
     : `${date.getMonth() + 1}月${date.getDate()}日`;
   return `${datePart} ${pad(date.getHours())}:${pad(date.getMinutes())}`;
 });
+const canSave = computed(() => {
+  const amount = Math.round(calculatedAmount.value * 100);
+  return Number.isFinite(amount) && amount > 0 && occurredAtValid.value;
+});
 const selectorOptions = computed<(EntryTypeOption | Category)[]>(() => {
   if (selectorLevel.value === "type") {
     const current = entryTypes.find((option) => option.id === entryType.value);
@@ -345,7 +351,7 @@ function toggleLedger(ledgerId: string) {
 
 function saveEntry() {
   const amount = Math.round(calculatedAmount.value * 100);
-  if (!Number.isFinite(amount) || amount <= 0) return;
+  if (!canSave.value) return;
 
   emit("save", {
     type: entryType.value,
@@ -377,7 +383,7 @@ function saveEntry() {
           <ChevronDown :size="13" />
         </button>
       </div>
-      <button class="header-date-button" type="button" @click="openDatePicker">
+      <button class="header-date-button" :class="{ invalid: !occurredAtValid }" type="button" :aria-invalid="!occurredAtValid" @click="openDatePicker">
         <CalendarDays :size="16" />
         <span>{{ dateLabel }}</span>
       </button>
@@ -514,7 +520,7 @@ function saveEntry() {
       <button type="button" class="key number-key" @click="appendDigit('1')">1</button>
       <button type="button" class="key number-key" @click="appendDigit('2')">2</button>
       <button type="button" class="key number-key" @click="appendDigit('3')">3</button>
-      <button type="button" class="key save-key" aria-label="完成记账" title="完成记账" @click="saveEntry">
+      <button type="button" class="key save-key" :disabled="!canSave" aria-label="完成记账" title="完成记账" @click="saveEntry">
         <Check :size="27" />
       </button>
 
diff --git a/apps/web/src/styles.css b/apps/web/src/styles.css
index a0eb2bf..339c4be 100644
--- a/apps/web/src/styles.css
+++ b/apps/web/src/styles.css
@@ -761,6 +761,12 @@ input:focus-visible {
   white-space: nowrap;
 }
 
+.header-date-button.invalid {
+  border-color: #e9a79c;
+  background: #fff2ef;
+  color: #c94635;
+}
+
 .native-date-input {
   position: absolute;
   right: 14px;
@@ -910,6 +916,11 @@ input:focus-visible {
   color: #ffffff;
 }
 
+.save-key:disabled {
+  background: #d8e1de;
+  color: #8a9894;
+}
+
 .category-focus-scrim {
   position: absolute;
   inset: 0;