diff --git a/api/erp-api/src/main/java/cn/qihangerp/erp/controller/ExternalGoodsController.java b/api/erp-api/src/main/java/cn/qihangerp/erp/controller/ExternalGoodsController.java
index 7acfa7f6..79c82bea 100644
--- a/api/erp-api/src/main/java/cn/qihangerp/erp/controller/ExternalGoodsController.java
+++ b/api/erp-api/src/main/java/cn/qihangerp/erp/controller/ExternalGoodsController.java
@@ -177,6 +177,14 @@ public class ExternalGoodsController extends BaseController {
             return AjaxResult.error("参数错误：pddPopAuth 需提供 appKey、appSecret、accessToken");
         }
         ExternalGoodsPddQuantityUpdateResultVo vo = externalGoodsPddQuantityUpdateAppService.updateQuantity(req);
+        log.info("[external/goods/pdd/quantity/update] result shopId={} outGoodsId={} outSkuId={} quantity={} "
+                        + "popBizSuccess={} quantityUpdateSuccess={} resolvedPddGoodsId={} resolvedPddSkuId={} message={}",
+                req.getShopId(), req.getOutGoodsId(), req.getOutSkuId(), req.getQuantity(),
+                vo.getPopBizSuccess(), vo.getQuantityUpdateSuccess(), vo.getResolvedPddGoodsId(), vo.getResolvedPddSkuId(),
+                truncateLog(vo.getMessage(), 600));
+        if (!Boolean.TRUE.equals(vo.getPopBizSuccess()) && StringUtils.hasText(vo.getPopResponseBody())) {
+            log.warn("[external/goods/pdd/quantity/update] popResponseBody={}", truncateLog(vo.getPopResponseBody(), 1200));
+        }
         if (!Boolean.TRUE.equals(vo.getPopBizSuccess())) {
             return AjaxResult.error(StringUtils.hasText(vo.getMessage()) ? vo.getMessage() : "pdd.goods.quantity.update 失败");
         }
diff --git a/service/src/main/java/cn/qihangerp/service/external/impl/ExternalGoodsPddQuantityUpdateAppServiceImpl.java b/service/src/main/java/cn/qihangerp/service/external/impl/ExternalGoodsPddQuantityUpdateAppServiceImpl.java
index ef02d0f5..e3e44f4a 100644
--- a/service/src/main/java/cn/qihangerp/service/external/impl/ExternalGoodsPddQuantityUpdateAppServiceImpl.java
+++ b/service/src/main/java/cn/qihangerp/service/external/impl/ExternalGoodsPddQuantityUpdateAppServiceImpl.java
@@ -117,6 +117,14 @@ public class ExternalGoodsPddQuantityUpdateAppServiceImpl implements ExternalGoo
             } else {
                 msg = "pdd.goods.quantity.update 成功";
             }
+            if (log.isDebugEnabled()) {
+                log.debug("[PDD] pdd.goods.quantity.update rawResponse shopId={} body={}",
+                        req.getShopId(), truncateForLog(raw, 4000));
+            }
+            log.info("[PDD] pdd.goods.quantity.update outcome shopId={} outGoodsId={} outSkuId={} pddGoodsId={} pddSkuId={} "
+                            + "quantity={} updateType={} forceUpdate={} noPopError={} innerSuccess={} popBizSuccess={} message={}",
+                    req.getShopId(), outGoodsId, outSkuId, pddGoodsId, pddSkuId, req.getQuantity(), updateType, forceUpdate,
+                    noPopError, innerOk, ok, truncateForLog(msg, 500));
             return ExternalGoodsPddQuantityUpdateResultVo.builder()
                     .popBizSuccess(ok)
                     .quantityUpdateSuccess(innerOk)
@@ -181,4 +189,11 @@ public class ExternalGoodsPddQuantityUpdateAppServiceImpl implements ExternalGoo
         }
         return s.trim();
     }
+
+    private static String truncateForLog(String s, int max) {
+        if (s == null) {
+            return "";
+        }
+        return s.length() <= max ? s : s.substring(0, max) + "...(truncated)";
+    }
 }