diff --git a/src/modules/first-leg/utils/firstLegOrder.test.mjs b/src/modules/first-leg/utils/firstLegOrder.test.mjs
index 5191897..8f37853 100644
--- a/src/modules/first-leg/utils/firstLegOrder.test.mjs
+++ b/src/modules/first-leg/utils/firstLegOrder.test.mjs
@@ -108,7 +108,7 @@ test('only requires sender for pickup and receiver for a private destination', (
   assert.ok(validateFirstLegOrderDraft(privateDraft).includes('请填写收件人姓名'))
 })
 
-test('requires FBA warehouse and cargo-level shipment, reference, SKU and UPC fields', () => {
+test('requires FBA warehouse and cargo-level shipment, reference and SKU while keeping UPC optional', () => {
   const draft = validDraft()
   draft.referenceNo = ''
   draft.amazonWarehouseCode = ''
@@ -121,7 +121,7 @@ test('requires FBA warehouse and cargo-level shipment, reference, SKU and UPC fi
   const errors = validateFirstLegOrderDraft(draft)
   assert.ok(errors.includes('FBA 订单请填写 Amazon 仓库编码'))
   assert.ok(errors.includes('第 1 条货物缺少客户 SKU'))
-  assert.ok(errors.includes('第 1 条货物缺少 UPC'))
+  assert.ok(!errors.includes('第 1 条货物缺少 UPC'))
   assert.ok(errors.includes('第 1 条货物缺少货件编号'))
   assert.ok(errors.includes('第 1 条货物缺少跟踪编号'))
 })
diff --git a/src/modules/first-leg/utils/firstLegOrder.ts b/src/modules/first-leg/utils/firstLegOrder.ts
index 64db76d..02cf989 100644
--- a/src/modules/first-leg/utils/firstLegOrder.ts
+++ b/src/modules/first-leg/utils/firstLegOrder.ts
@@ -122,7 +122,6 @@ export function validateFirstLegOrderDraft(draft: FirstLegOrderDraft) {
     if (!item.cargoNameCn.trim()) errors.push(`${line}缺少中文品名`)
     if (!item.packageType.trim()) errors.push(`${line}缺少包装类型`)
     if (draft.destinationType === 'FBA' && !item.sku.trim()) errors.push(`${line}缺少客户 SKU`)
-    if (draft.destinationType === 'FBA' && !item.upc.trim()) errors.push(`${line}缺少 UPC`)
     if (draft.destinationType === 'FBA' && !item.shipmentId.trim()) errors.push(`${line}缺少货件编号`)
     if (draft.destinationType === 'FBA' && !item.referenceId.trim()) errors.push(`${line}缺少跟踪编号`)
     if (!Number.isInteger(item.pieces) || item.pieces <= 0) errors.push(`${line}件数必须为正整数`)
diff --git a/src/modules/first-leg/views/FirstLegOrdersView.test.mjs b/src/modules/first-leg/views/FirstLegOrdersView.test.mjs
index 6aeeda4..9040d98 100644
--- a/src/modules/first-leg/views/FirstLegOrdersView.test.mjs
+++ b/src/modules/first-leg/views/FirstLegOrdersView.test.mjs
@@ -394,7 +394,10 @@ test('shows field-level validation and concise guidance for required order input
   assert.match(source, /prop="consigneePartySnapshot\.address" required/)
   assert.match(source, /:prop="`items\.\$\{index\}\.cargoNameCn`" required/)
   assert.match(source, /:prop="`items\.\$\{index\}\.grossWeightKg`" required/)
-  assert.match(source, /:prop="`items\.\$\{index\}\.upc`"[^>]*:required="form\.destinationType === 'FBA'"[^>]*>\s*<el-input v-model="item\.upc"/)
+  assert.match(source, /:prop="`items\.\$\{index\}\.upc`">\s*<el-input v-model="item\.upc"[^>]*placeholder="UPC NO\.（选填）"/)
+  assert.doesNotMatch(source, /:prop="`items\.\$\{index\}\.upc`"[^>]*(?:required|:rules)/)
+  assert.match(source, /UPC NO\. 选填/)
+  assert.doesNotMatch(source, /UPC必填/)
   assert.match(source, /v-model="item\.cargoNameCn"[^>]*placeholder="中文品名"/)
   assert.match(source, /\.order-form :deep\(\.el-form-item__error\).*position: static/)
 })
diff --git a/src/modules/first-leg/views/FirstLegOrdersView.vue b/src/modules/first-leg/views/FirstLegOrdersView.vue
index 4a3f533..dc5e0ad 100644
--- a/src/modules/first-leg/views/FirstLegOrdersView.vue
+++ b/src/modules/first-leg/views/FirstLegOrdersView.vue
@@ -1817,7 +1817,7 @@ async function searchOrders(model: QueryModel) {
                 <th class="cargo-check-cell"><el-checkbox :model-value="allCargoSelected" :indeterminate="someCargoSelected" aria-label="全选货物" @change="toggleAllCargoItems" /></th><th class="cargo-index-cell">#</th>
                 <th>SKU NO.<small>SKU必填</small></th><th>中文品名</th><th class="cargo-image-column">图片</th><th>英文品名</th><th>报关 HS CODE</th><th>清关 HS CODE</th><th>包装类型</th>
                 <th class="cargo-number-column">箱规长 cm</th><th class="cargo-number-column">箱规宽 cm</th><th class="cargo-number-column">箱规高 cm</th><th class="cargo-number-column">每箱数量</th><th class="cargo-number-column">箱数</th><th class="cargo-number-column">总毛重</th><th class="cargo-number-column">总体积</th><th class="cargo-number-column">总数量</th><th class="cargo-number-column">总净重</th>
-                <th>清关申报单价 USD</th><th>清关申报金额 USD</th><th>材质</th><th>用途</th><th>型号</th><th>品牌</th><th class="cargo-dimensions-column">产品规格 长×宽×高</th><th>危险品</th><th>货件编号<small>货件编号必填</small></th><th>跟踪编号<small>跟踪编号必填</small></th><th>UPC NO.<small>UPC必填</small></th><th>备注</th><th class="cargo-operation-column">操作</th>
+                <th>清关申报单价 USD</th><th>清关申报金额 USD</th><th>材质</th><th>用途</th><th>型号</th><th>品牌</th><th class="cargo-dimensions-column">产品规格 长×宽×高</th><th>危险品</th><th>货件编号<small>货件编号必填</small></th><th>跟踪编号<small>跟踪编号必填</small></th><th>UPC NO.</th><th>备注</th><th class="cargo-operation-column">操作</th>
               </tr></thead>
               <tbody><tr v-for="(item, index) in form.items" :key="item.id">
                 <td class="cargo-check-cell"><el-checkbox :model-value="selectedCargoIds.includes(item.id)" :aria-label="`选择货物 ${index + 1}`" @change="toggleCargoItem(item.id, $event)" /></td><td class="cargo-index-cell">{{ index + 1 }}</td>
@@ -1830,11 +1830,11 @@ async function searchOrders(model: QueryModel) {
                 <td><el-form-item :prop="`items.${index}.unitsPerPackage`" required :rules="positiveNumberRules('每箱数量必须大于 0', true)"><el-input-number v-model="item.unitsPerPackage" :min="1" :controls="false" /></el-form-item></td><td><el-form-item :prop="`items.${index}.packageCount`" required :rules="positiveNumberRules('箱数必须大于 0', true)"><el-input-number v-model="item.packageCount" :min="1" :controls="false" /></el-form-item></td><td><el-form-item :prop="`items.${index}.grossWeightKg`" required :rules="positiveNumberRules('总毛重必须大于 0')"><el-input-number v-model="item.grossWeightKg" :min="0" :precision="3" :controls="false" /></el-form-item></td><td><el-form-item :prop="`items.${index}.volumeCbm`" required :rules="positiveNumberRules('总体积必须大于 0')"><el-input-number v-model="item.volumeCbm" :min="0" :precision="4" :controls="false" /></el-form-item></td><td><el-form-item :prop="`items.${index}.pieces`" required :rules="positiveNumberRules('总数量必须大于 0', true)"><el-input-number v-model="item.pieces" :min="1" :controls="false" /></el-form-item></td><td><el-input-number v-model="item.netWeightKg" :min="0" :precision="3" :controls="false" /></td>
                 <td><el-input-number v-model="item.unitDeclaredValue" :min="0" :precision="2" :controls="false" /></td><td><el-input-number v-model="item.declaredValue" :min="0" :precision="2" :controls="false" /></td><td><el-input v-model="item.material" maxlength="128" placeholder="材质" /></td><td><el-input v-model="item.usage" maxlength="128" placeholder="用途" /></td><td><el-input v-model="item.model" maxlength="64" placeholder="型号" /></td><td><el-input v-model="item.brand" maxlength="64" placeholder="品牌" /></td>
                 <td class="cargo-dimensions-column"><div class="cargo-table-dimensions"><el-input-number v-model="item.productLengthCm" :min="0" :precision="2" :controls="false" /><span>×</span><el-input-number v-model="item.productWidthCm" :min="0" :precision="2" :controls="false" /><span>×</span><el-input-number v-model="item.productHeightCm" :min="0" :precision="2" :controls="false" /></div></td><td class="cargo-danger-cell"><el-switch v-model="item.dangerousGoods" /></td>
-                <td><el-form-item :prop="`items.${index}.shipmentId`" :required="form.destinationType === 'FBA'" :rules="form.destinationType === 'FBA' ? requiredTextRules('FBA 货物请输入货件编号') : undefined"><el-input v-model="item.shipmentId" maxlength="64" placeholder="货件编号" /></el-form-item></td><td><el-form-item :prop="`items.${index}.referenceId`" :required="form.destinationType === 'FBA'" :rules="form.destinationType === 'FBA' ? requiredTextRules('FBA 货物请输入跟踪编号') : undefined"><el-input v-model="item.referenceId" maxlength="64" placeholder="跟踪编号" /></el-form-item></td><td><el-form-item :prop="`items.${index}.upc`" :required="form.destinationType === 'FBA'" :rules="form.destinationType === 'FBA' ? requiredTextRules('FBA 货物请输入 UPC NO.') : undefined"><el-input v-model="item.upc" maxlength="64" placeholder="UPC NO." /></el-form-item></td><td><el-input v-model="item.remark" maxlength="500" placeholder="备注" /></td><td class="cargo-operation-column"><el-button link type="danger" :aria-label="`删除货物 ${index + 1}`" @click="removeCargoItem(index)"><Trash2 :size="15" />删除</el-button></td>
+                <td><el-form-item :prop="`items.${index}.shipmentId`" :required="form.destinationType === 'FBA'" :rules="form.destinationType === 'FBA' ? requiredTextRules('FBA 货物请输入货件编号') : undefined"><el-input v-model="item.shipmentId" maxlength="64" placeholder="货件编号" /></el-form-item></td><td><el-form-item :prop="`items.${index}.referenceId`" :required="form.destinationType === 'FBA'" :rules="form.destinationType === 'FBA' ? requiredTextRules('FBA 货物请输入跟踪编号') : undefined"><el-input v-model="item.referenceId" maxlength="64" placeholder="跟踪编号" /></el-form-item></td><td><el-form-item :prop="`items.${index}.upc`"><el-input v-model="item.upc" maxlength="64" placeholder="UPC NO.（选填）" /></el-form-item></td><td><el-input v-model="item.remark" maxlength="500" placeholder="备注" /></td><td class="cargo-operation-column"><el-button link type="danger" :aria-label="`删除货物 ${index + 1}`" @click="removeCargoItem(index)"><Trash2 :size="15" />删除</el-button></td>
               </tr></tbody>
             </table>
           </div>
-          <div class="cargo-table-hint"><span>SKU NO.、货件编号、跟踪编号、UPC NO. 均为必填项</span></div>
+          <div class="cargo-table-hint"><span>SKU NO.、货件编号、跟踪编号为 FBA 货物必填项，UPC NO. 选填</span></div>
         </section>
 
         <section class="order-form-section prototype-section cost-estimate-section" aria-label="费用预估">