diff --git a/ruoyi-admin/src/main/java/com/ruoyi/web/controller/jarvis/TencentDocController.java b/ruoyi-admin/src/main/java/com/ruoyi/web/controller/jarvis/TencentDocController.java
index 53fcbbb..86df17b 100644
--- a/ruoyi-admin/src/main/java/com/ruoyi/web/controller/jarvis/TencentDocController.java
+++ b/ruoyi-admin/src/main/java/com/ruoyi/web/controller/jarvis/TencentDocController.java
@@ -1055,6 +1055,22 @@ public class TencentDocController extends BaseController {
                 log.info("已截断结束行以符合 API 限制: endRow={}, 行数={}", endRow, READ_ROWS_WHEN_USE_ROW_TOTAL);
             }
 
+            // 若之前未取到 rowTotal 或来自 fallback，再次尝试并用 sheet 最大行硬性限制，避免读到 348 超出 324 行
+            if (rowTotal <= 0) {
+                rowTotal = tencentDocService.getSheetRowTotal(accessToken, fileId, sheetId);
+            }
+            if (rowTotal > 0) {
+                if (startRow > rowTotal) {
+                    startRow = Math.max(MIN_START_ROW_WHEN_USE_ROW_TOTAL,
+                        Math.max(effectiveStartRow, rowTotal - READ_ROWS_WHEN_USE_ROW_TOTAL));
+                    endRow = Math.min(rowTotal, startRow + READ_ROWS_WHEN_USE_ROW_TOTAL - 1);
+                    log.info("按 rowTotal={} 修正范围，避免超出表尾: 第 {} ~ {} 行", rowTotal, startRow, endRow);
+                } else if (endRow > rowTotal) {
+                    endRow = rowTotal;
+                    log.info("按 rowTotal={} 截断结束行: endRow={}", rowTotal, endRow);
+                }
+            }
+
             log.info("开始填充物流链接 - 文件ID: {}, 工作表ID: {}, 起始行: {}, 结束行: {}, rowTotal: {}",
                 fileId, sheetId, startRow, endRow, rowTotal > 0 ? rowTotal : "未获取");
 
diff --git a/ruoyi-system/src/main/java/com/ruoyi/jarvis/service/impl/TencentDocServiceImpl.java b/ruoyi-system/src/main/java/com/ruoyi/jarvis/service/impl/TencentDocServiceImpl.java
index 37de8c7..c82850c 100644
--- a/ruoyi-system/src/main/java/com/ruoyi/jarvis/service/impl/TencentDocServiceImpl.java
+++ b/ruoyi-system/src/main/java/com/ruoyi/jarvis/service/impl/TencentDocServiceImpl.java
@@ -598,9 +598,16 @@ public class TencentDocServiceImpl implements ITencentDocService {
                     continue;
                 }
                 String sid = props.getString("sheetId");
-                if (sheetId.equals(sid) && props.containsKey("rowTotal")) {
+                if (!sheetId.equals(sid)) {
+                    continue;
+                }
+                // rowTotal 可能为 rowTotal 或 row_total
+                if (props.containsKey("rowTotal")) {
                     return Math.max(0, props.getIntValue("rowTotal"));
                 }
+                if (props.containsKey("row_total")) {
+                    return Math.max(0, props.getIntValue("row_total"));
+                }
             }
             return 0;
         } catch (Exception e) {