diff --git a/docs/11-ai-outfit.md b/docs/11-ai-outfit.md
index 9da62d9..403d424 100644
--- a/docs/11-ai-outfit.md
+++ b/docs/11-ai-outfit.md
@@ -55,8 +55,8 @@ services/excel_service：把结果写回 Excel（D 新图路径 / E 状态 / F 
 | 列 | 含义 | 读/写 |
 |---|---|---|
 | A | 标题 | 读 |
-| B | 货号（商品 ID） | 读 |
-| C | 衣服图路径（本机绝对路径） | 读 |
+| B | 货号（商品 ID，**可空**） | 读 |
+| C | 衣服图路径（本机绝对路径，文件或目录） | 读 |
 | D | 生成结果图片路径 | 写回 |
 | E | 完成状态：`完成` / `失败`（空=未处理） | 写回 |
 | F | 失败原因（仅人工查看） | 写回 |
@@ -65,7 +65,7 @@ services/excel_service：把结果写回 Excel（D 新图路径 / E 状态 / F 
 
 - 默认读第一个工作表，第 1 行表头，从第 2 行开始。
 - **跳过 E=`完成` 的行**；是否处理 E=`失败` 的行由界面「重试失败行」决定（勾选则处理「空白 + 失败」，否则只处理「空白」）。
-- 标题/货号/衣服图任一为空 → 跳过该行，不写状态、不中断。
+- **行有效性只看「标题 + 衣服图路径」两者非空**；**货号（B 列）可空**——它不进提示词，仅用于单文件行的输出命名（见 §9），为空时命名回退用源图名，因此不应再因缺货号而跳过整行。标题或衣服图为空 → 跳过该行，不写状态、不中断。
 - 字段按原样读取，不清理空格、不回写清理值。
 - **开始前检测 Excel 是否被占用**（Office 打开会锁文件，openpyxl 无法写回）→ 提示「请关闭 Excel 后再开始」。
 - **每处理完一行即保存 Excel**（降低崩溃丢结果风险）。
@@ -174,7 +174,7 @@ Excel 行 → `OutfitTask` 列表的转换由 `excel_service` 完成；核心只
 
 - 格式 JPG，1:1，压缩到 ≤2MB；质量三档（小文件 75 / 均衡 85 / 高清 92）。
 - 默认输出目录沿用 cmbot `get_output_dir()`（程序旁的「合并后的图片」，见 `docs/10` §5），界面可改。
-- 命名：`货号.jpg`，重名自动 `_1`/`_2`，非法字符替换为 `_`（不改 Excel 原始货号）。
+- 命名：`货号.jpg`，重名自动 `_1`/`_2`，非法字符替换为 `_`（不改 Excel 原始货号）。**货号为空时命名回退用源图名**（`<源图名>.jpg`，与目录行一致）。
 - 成功后把**实际新图绝对路径**写回 Excel D 列。
 
 ### 9.1 目录行的输出（多图 → 同名子目录）
diff --git a/src/app/widgets/ai_outfit_panel.py b/src/app/widgets/ai_outfit_panel.py
index 234eb88..564bd2d 100644
--- a/src/app/widgets/ai_outfit_panel.py
+++ b/src/app/widgets/ai_outfit_panel.py
@@ -687,8 +687,9 @@ class AiOutfitPanel(QWidget):
         self._sample_combo.clear()
         if tasks:
             for t in tasks:
+                pid = t.product_id if (t.product_id and t.product_id.strip()) else "(无货号)"
                 self._sample_combo.addItem(
-                    "第 {} 行 · {} · {}".format(t.row_index, t.product_id, t.title), t)
+                    "第 {} 行 · {} · {}".format(t.row_index, pid, t.title), t)
         else:
             self._sample_combo.addItem("（选 Excel 后显示替换效果）", None)
         self._sample_combo.blockSignals(False)
diff --git a/src/core/ai_outfit.py b/src/core/ai_outfit.py
index a6873eb..97b00d5 100644
--- a/src/core/ai_outfit.py
+++ b/src/core/ai_outfit.py
@@ -167,7 +167,10 @@ def generate_outfit_image(
         prompt = render_prompt(prompt_template, task, resolution=resolution)
         client = api_client or ImageApiClient(model_config)
         image_bytes = client.generate(prompt, task.garment_path, resolution=resolution)
-        output_path = make_outfit_output_path(output_dir, task.product_id)
+        # 货号可空：为空时输出名回退用源图名（docs/11 §9）。
+        name = task.product_id if (task.product_id and str(task.product_id).strip()) \
+            else Path(task.garment_path).stem
+        output_path = make_outfit_output_path(output_dir, name)
         save_jpg_under_limit(image_bytes, output_path, quality=quality)
         logger.info("Generated outfit row %s -> %s", task.row_index, output_path)
         return OutfitResult(
diff --git a/src/services/excel_service.py b/src/services/excel_service.py
index 095b6d0..85b0f0f 100644
--- a/src/services/excel_service.py
+++ b/src/services/excel_service.py
@@ -72,8 +72,9 @@ def load_outfit_tasks(excel_path, retry_failed=False):
     A title, B product id, C garment path, D output path, E status, F error.
 
     Rows start at 2. Completed rows are always skipped. Failed rows are included
-    only when *retry_failed* is True. Rows missing title/product/path are skipped
-    silently and are not written back.
+    only when *retry_failed* is True. Row validity needs only 标题 + 衣服图路径;
+    货号 (B) is optional (docs/11 §4). Rows missing title/path are skipped silently
+    and are not written back.
     """
     path = Path(excel_path)
     workbook = load_workbook(str(path))
@@ -86,7 +87,8 @@ def load_outfit_tasks(excel_path, retry_failed=False):
             product_id = sheet.cell(row_index, COL_PRODUCT_ID).value
             garment_path = sheet.cell(row_index, COL_GARMENT_PATH).value
 
-            if _is_empty(title) or _is_empty(product_id) or _is_empty(garment_path):
+            # 货号(B)可空：只要求 标题 + 衣服图路径 非空（docs/11 §4）。
+            if _is_empty(title) or _is_empty(garment_path):
                 logger.debug("Skipped incomplete outfit row %s in %s", row_index, path)
                 continue
 
@@ -117,9 +119,9 @@ def read_all_rows(excel_path):
     """Return an OutfitTask for every valid data row, ignoring E-column status.
 
     Unlike load_outfit_tasks (which filters for *processable* rows), this returns
-    all rows whose title/product/garment are filled — including 「完成」/「失败」 —
-    for preview/sample purposes only (docs/11 §10.3). Rows missing any of those
-    fields are skipped.
+    all rows whose 标题 + 衣服图路径 are filled — including 「完成」/「失败」, and
+    regardless of 货号 (which is optional, docs/11 §4) — for preview/sample purposes
+    only (docs/11 §10.3). Rows missing title/garment are skipped.
     """
     path = Path(excel_path)
     workbook = load_workbook(str(path))
@@ -130,7 +132,7 @@ def read_all_rows(excel_path):
             title = sheet.cell(row_index, COL_TITLE).value
             product_id = sheet.cell(row_index, COL_PRODUCT_ID).value
             garment_path = sheet.cell(row_index, COL_GARMENT_PATH).value
-            if _is_empty(title) or _is_empty(product_id) or _is_empty(garment_path):
+            if _is_empty(title) or _is_empty(garment_path):   # 货号可空
                 continue
             raw_status = sheet.cell(row_index, COL_STATUS).value
             rows.append(
diff --git a/tasks.md b/tasks.md
index ed26a1f..3a05832 100644
--- a/tasks.md
+++ b/tasks.md
@@ -1160,3 +1160,15 @@
 - [x] `ai_outfit_panel.py`：`gen` 闭包传 `request_interval`/`image_log=self.log.emit`；`_add_result_thumb` 逐张加缩略图；`_on_progress` 明细「结果」列显示「子目录 (N 张)」；`_basename` 处理目录末尾分隔符
 - [x] `tests/test_ai_outfit.py`：扇出/幂等跳过/空目录/部分失败/命名过滤等用例；既有单文件用例保持绿；全套 12 文件 py37 全绿
 - [x] 离屏冒烟：临时 Excel 的 C 指向含 3 张图的目录 + mock API，断言 `输出/<目录名>/` 下 3 个 jpg、D=子目录、E=完成、缩略图 3 张
+
+### 19.14 货号(B列)改为可选 — docs/11 §4 / §9
+
+前置阅读：`docs/11-ai-outfit.md`（§4、§9、§4.1）、`src/services/excel_service.py`（`load_outfit_tasks`/`read_all_rows` 完整性判定）、`src/core/ai_outfit.py`（`make_outfit_output_path`/`generate_outfit_image` 单文件分支）、`src/app/widgets/ai_outfit_panel.py`（`_fill_sample_combo`）
+
+背景：用户表的「商品id(货号)」整列为空，而行有效性要求 标题+货号+图三者非空 → `read_all_rows` 与 `load_outfit_tasks` 都返回 0 行：预览下拉显示占位符，且「开始生成」也判定无待处理行。货号不进提示词、目录行输出名沿用源图名，对目录用法是多余约束。已确认：货号改可选。
+
+- [x] `excel_service.py`：`read_all_rows` 与 `load_outfit_tasks` 完整性判定改为**只要求 标题 + 衣服图路径**非空；货号可空（状态过滤不变）
+- [x] `core/ai_outfit.py`：单文件分支货号为空时输出名回退 `Path(garment_path).stem`（货号非空仍用 `货号.jpg`）；目录行不变
+- [x] `ai_outfit_panel.py`：样本下拉标签货号为空时显示「(无货号)」，明细表货号列允许空
+- [x] `tests/test_excel_service.py` / `test_ai_outfit.py`：空货号行被 `read_all_rows`/`load_outfit_tasks` 收录；单文件空货号 → 输出按源图名命名；既有用例保持绿
+- [x] 离屏冒烟：用「标题填、货号空、C=目录」的表，断言预览下拉有行、生成产出到子目录、E=完成；全套 py37 全绿
diff --git a/tests/test_ai_outfit.py b/tests/test_ai_outfit.py
index 1957fee..1d4281a 100644
--- a/tests/test_ai_outfit.py
+++ b/tests/test_ai_outfit.py
@@ -124,6 +124,22 @@ class TestAiOutfitCore(unittest.TestCase):
         self.assertFalse(result.success)
         self.assertIn("boom", result.error)
 
+    def test_generate_single_file_empty_product_id_uses_source_name(self):
+        from core.ai_outfit import generate_outfit_image
+        from core.models import OutfitTask
+
+        garment = self.tmp / "shirt.png"
+        self._make_image_file(garment)
+        task = OutfitTask(row_index=2, title="款", product_id="",
+                          garment_path=str(garment))
+
+        result = generate_outfit_image(
+            task, "穿 {title}", self.tmp / "o",
+            model_config={}, api_client=_RecordingClient(self._image_bytes()))
+
+        self.assertTrue(result.success, result.error)
+        self.assertEqual(Path(result.output_path).name, "shirt.jpg")
+
     # -- directory rows (docs/11 §4.1 / §9.1) ---------------------------
 
     def _make_image_file(self, path, color=(10, 20, 30)):
diff --git a/tests/test_excel_service.py b/tests/test_excel_service.py
index b9392bc..562f9dc 100644
--- a/tests/test_excel_service.py
+++ b/tests/test_excel_service.py
@@ -108,6 +108,24 @@ class TestOutfitExcelService(unittest.TestCase):
         self.assertEqual(by_idx[4].status, "失败")
         self.assertEqual(by_idx[6].title, "  保留空格  ")  # raw text preserved
 
+    def test_empty_product_id_rows_are_included(self):
+        """货号(B)可空：只要求 标题 + 衣服图路径（docs/11 §4）。"""
+        from services.excel_service import load_outfit_tasks, read_all_rows
+
+        p = self.tmp / "nopid.xlsx"
+        wb = Workbook()
+        ws = wb.active
+        ws.append(["标题", "货号", "衣服图", "结果", "状态", "原因"])
+        ws.append(["有标题无货号", "", r"D:\img\a.png", "", "", ""])   # 收录
+        ws.append(["缺图也缺货号", "", "", "", "", ""])                # 缺图 → 仍跳过
+        wb.save(str(p))
+        wb.close()
+
+        tasks = load_outfit_tasks(p)
+        self.assertEqual([t.row_index for t in tasks], [2])
+        self.assertEqual(tasks[0].product_id, "")
+        self.assertEqual([r.row_index for r in read_all_rows(p)], [2])
+
     def test_check_excel_writable_true_for_existing_workbook(self):
         from services.excel_service import check_excel_writable