diff --git a/service/src/main/java/cn/qihangerp/service/external/pdd/ExternalPddPublishService.java b/service/src/main/java/cn/qihangerp/service/external/pdd/ExternalPddPublishService.java
index ae7d17d5..e1c1c0ba 100644
--- a/service/src/main/java/cn/qihangerp/service/external/pdd/ExternalPddPublishService.java
+++ b/service/src/main/java/cn/qihangerp/service/external/pdd/ExternalPddPublishService.java
@@ -15,7 +15,7 @@ import java.util.List;
 
 /**
  * 拼多多发布：POP 凭证仅来自本次请求的 {@link ExternalGoodsUpsertRequest#getPddPopAuth()}；不依赖 {@code o_shop}。
- * 可选自动拉取类目规则与 spec.id；图书等 {@code input_max_spec_num=0} 类目可走无规格单 SKU（{@code sku_list} 项不传 {@code spec_id_list}/{@code spec_detail_list}）。
+ * 可选自动拉取类目规则与 spec.id；图书等 {@code input_max_spec_num=0} 类目可走无规格单 SKU（{@code sku_list} 与 POP 文档一致：{@code spec_id_list} 字符串 {@code "[]"}，{@code price}/{@code multi_price} 分数字符串）。
  *
  * @author guochengyu
  */
@@ -108,7 +108,7 @@ public class ExternalPddPublishService {
                 specAuto = true;
             } else if (PddOpenApiSupport.isNoSpecBookCatRule(ar.getCatRuleRaw()) && skuRows.size() == 1) {
                 noSpecBookPublish = true;
-                autoDetail = "类目 input_max_spec_num=0：拼多多无规格发品（单 sku_list，不传 spec_id_list/spec_detail_list，未调用 spec.id.get）";
+                autoDetail = "类目 input_max_spec_num=0：拼多多无规格发品（单 sku_list，spec_id_list=\"[]\" 字符串，price/multi_price 分数字符串，未调用 spec.id.get）";
                 log.info("[PDD] no-spec book publish shopId={} outGoodsId={}", req.getShopId(), req.getOutGoodsId());
             } else if (PddOpenApiSupport.isNoSpecBookCatRule(ar.getCatRuleRaw())) {
                 log.info("[PDD] publish skipped shopId={} outGoodsId={} reason=no-spec-requires-single-sku skuCount={}",
diff --git a/service/src/main/java/cn/qihangerp/service/external/pdd/PddGoodsAddParamBuilder.java b/service/src/main/java/cn/qihangerp/service/external/pdd/PddGoodsAddParamBuilder.java
index 0e0d178b..e09e0813 100644
--- a/service/src/main/java/cn/qihangerp/service/external/pdd/PddGoodsAddParamBuilder.java
+++ b/service/src/main/java/cn/qihangerp/service/external/pdd/PddGoodsAddParamBuilder.java
@@ -112,8 +112,9 @@ public class PddGoodsAddParamBuilder {
             JSONObject sku = new JSONObject();
             sku.put("is_onsale", 1);
             sku.put("limit_quantity", 999L);
-            sku.put("multi_price", groupFen);
-            sku.put("price", singleFen);
+            // POP 文档：sku_list 内 multi_price / price 为分数字符串，如 "1900"、"2200"
+            sku.put("multi_price", fenAsSkuPriceString(groupFen));
+            sku.put("price", fenAsSkuPriceString(singleFen));
             sku.put("quantity", row.getStockQty() != null ? row.getStockQty().longValue() : 0L);
             sku.put("weight", row.getWeightGram() != null ? row.getWeightGram() : 1000L);
             sku.put("spec_id_list", ov.getSpecIdList());
@@ -151,8 +152,9 @@ public class PddGoodsAddParamBuilder {
     }
 
     /**
-     * 拼多多「无规格」发品（如图书 {@code input_max_spec_num=0}）：仅一条 {@code sku_list}，
-     * SKU 对象不传 {@code spec_id_list}、{@code spec_detail_list}；根级 {@code is_sku=false}，不调用 {@code spec.id.get}。
+     * 拼多多「无规格」发品（如图书 {@code input_max_spec_num=0}）：仅一条 {@code sku_list}。
+     * 与 POP 文档一致：{@code spec_id_list} 为<strong>字符串</strong>形式的 JSON 数组，无规格为 {@code "[]"}（有规格如 {@code "[25]"}）；
+     * {@code price}/{@code multi_price} 为<strong>分数字符串</strong>；不传 {@code spec_detail_list}；根级 {@code is_sku=false}。
      * <p>调用方须保证过滤后仅 1 条有效 SKU。</p>
      */
     public String buildParamJsonNoSpecBook(OGoods goods, List<OGoodsSku> skus, ExternalGoodsUpsertRequest req,
@@ -230,10 +232,11 @@ public class PddGoodsAddParamBuilder {
         JSONObject sku = new JSONObject();
         sku.put("is_onsale", 1);
         sku.put("limit_quantity", 999L);
-        sku.put("multi_price", groupFen);
-        sku.put("price", singleFen);
+        sku.put("multi_price", fenAsSkuPriceString(groupFen));
+        sku.put("price", fenAsSkuPriceString(singleFen));
         sku.put("quantity", qty);
         sku.put("weight", row.getWeightGram() != null ? row.getWeightGram() : 1000L);
+        sku.put("spec_id_list", "[]");
         sku.put("thumb_url", StringUtils.hasText(row.getSkuImageUrl()) ? row.getSkuImageUrl() : carousel.get(0));
         if (StringUtils.hasText(row.getOuterErpSkuId())) {
             sku.put("out_sku_sn", row.getOuterErpSkuId());
@@ -376,6 +379,11 @@ public class PddGoodsAddParamBuilder {
         return yuan.multiply(BigDecimal.valueOf(100)).setScale(0, RoundingMode.HALF_UP).longValue();
     }
 
+    /** POP 文档示例中 sku_list 的 price、multi_price 为分数字符串。 */
+    private static String fenAsSkuPriceString(long fen) {
+        return Long.toString(fen);
+    }
+
     private static BigDecimal firstNonNull(BigDecimal a, BigDecimal b) {
         return a != null ? a : b;
     }