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 5dfce13..5a1e5f3 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
@@ -57,8 +57,12 @@ public class TencentDocController extends BaseController {
     /** Redis key前缀，用于存储上次处理的最大行数 */
     private static final String LAST_PROCESSED_ROW_KEY_PREFIX = "tendoc:last_row:";
 
-    /** 单次请求最大行数（腾讯文档 API：行数≤1000，一次拉 500 行） */
+    /** 单次请求最大行数（腾讯文档 API：行数≤1000） */
     private static final int API_MAX_ROWS_PER_REQUEST = 500;
+    /** 用 rowTotal 时接口实际单次只能读 200 行 */
+    private static final int READ_ROWS_WHEN_USE_ROW_TOTAL = 200;
+    /** 用 rowTotal 时 startRow = rowTotal - 200 必须大于此值（保证至少为 3，避免表头） */
+    private static final int MIN_START_ROW_WHEN_USE_ROW_TOTAL = 3;
     /** 数据区 range 列尾（30 列 = A 到 AD，API 列数≤200） */
     private static final String DATA_RANGE_COL_END = "AD";
     /** 回溯行数：下次起始行 = 本次扫描终点 + 1 - 回溯，用于覆盖物流变更或延后补填 */
@@ -1010,40 +1014,49 @@ public class TencentDocController extends BaseController {
                 }
             }
 
-            // 计算本次同步的起始行和结束行（完美推送回溯）
-            // 1. 单次请求不超过 API_MAX_ROWS_PER_REQUEST，避免 range invalid
-            // 2. 下次起始 = 本次扫描终点 + 1 - BACKTRACK_ROWS，兼顾物流变更与补填
-            // 3. 至少前进行数 MIN_ADVANCE_ROWS，避免文档中间大量空行时原地打转
             int effectiveStartRow = configStartRow != null ? configStartRow : (headerRow + 1);
-
             int startRow;
             int endRow;
 
-            if (forceStartRow != null) {
-                startRow = forceStartRow;
-                endRow = startRow + API_MAX_ROWS_PER_REQUEST - 1;
-                log.info("使用强制指定的起始行: {}, 结束行: {}（单批最多 {} 行）", startRow, endRow, API_MAX_ROWS_PER_REQUEST);
-            } else if (lastMaxRow != null && lastMaxRow >= effectiveStartRow) {
-                // 带回溯的起始：从 (上次最大行 + 1 - 回溯行数) 开始，保证覆盖物流变更与延后补填
-                startRow = Math.max(effectiveStartRow, lastMaxRow + 1 - BACKTRACK_ROWS);
-                endRow = startRow + API_MAX_ROWS_PER_REQUEST - 1;
-                log.info("上次最大行: {}，回溯 {} 行后从第 {} 行开始，到第 {} 行（本批最多 {} 行）",
-                    lastMaxRow, BACKTRACK_ROWS, startRow, endRow, API_MAX_ROWS_PER_REQUEST);
+            // 直接拉取文档信息得到 rowTotal，用「最大行 - 200」作为起始（接口实际只能读 200 行），且保证 -200 之后 > 2
+            int rowTotal = tencentDocService.getSheetRowTotal(accessToken, fileId, sheetId);
+            if (rowTotal > 0) {
+                if (forceStartRow != null) {
+                    startRow = forceStartRow;
+                    endRow = Math.min(rowTotal, startRow + READ_ROWS_WHEN_USE_ROW_TOTAL - 1);
+                } else {
+                    // startRow = rowTotal - 200，且必须大于 2（>= MIN_START_ROW_WHEN_USE_ROW_TOTAL）
+                    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("使用文档 rowTotal={}，本次范围: 第 {} ~ {} 行（共 {} 行，单次最多 {} 行）",
+                    rowTotal, startRow, endRow, endRow - startRow + 1, READ_ROWS_WHEN_USE_ROW_TOTAL);
             } else {
-                startRow = effectiveStartRow;
-                endRow = startRow + API_MAX_ROWS_PER_REQUEST - 1;
-                log.info("首次同步或配置已重置，从第 {} 行开始，到第 {} 行（单批最多 {} 行）", startRow, endRow, API_MAX_ROWS_PER_REQUEST);
+                // 未取到 rowTotal 时退回原逻辑
+                if (forceStartRow != null) {
+                    startRow = forceStartRow;
+                    endRow = startRow + API_MAX_ROWS_PER_REQUEST - 1;
+                    log.info("使用强制指定的起始行: {}, 结束行: {}（未取到 rowTotal）", startRow, endRow);
+                } else if (lastMaxRow != null && lastMaxRow >= effectiveStartRow) {
+                    startRow = Math.max(effectiveStartRow, lastMaxRow + 1 - BACKTRACK_ROWS);
+                    endRow = startRow + API_MAX_ROWS_PER_REQUEST - 1;
+                    log.info("上次最大行: {}，回溯后从第 {} 行到第 {} 行（未取到 rowTotal）", lastMaxRow, startRow, endRow);
+                } else {
+                    startRow = effectiveStartRow;
+                    endRow = startRow + API_MAX_ROWS_PER_REQUEST - 1;
+                    log.info("首次同步，从第 {} 行到第 {} 行（未取到 rowTotal）", startRow, endRow);
+                }
             }
 
-            // 严格限制单次 range 行数，防止 API 报 range invalid
-            int rowCount = endRow - startRow + 1;
-            if (rowCount > API_MAX_ROWS_PER_REQUEST) {
-                endRow = startRow + API_MAX_ROWS_PER_REQUEST - 1;
-                log.info("已截断结束行以符合 API 限制: endRow={}, 行数={}", endRow, API_MAX_ROWS_PER_REQUEST);
+            // 严格限制单次 range 行数（接口实际只能读 200 行）
+            if (endRow - startRow + 1 > READ_ROWS_WHEN_USE_ROW_TOTAL) {
+                endRow = startRow + READ_ROWS_WHEN_USE_ROW_TOTAL - 1;
+                log.info("已截断结束行以符合 API 限制: endRow={}, 行数={}", endRow, READ_ROWS_WHEN_USE_ROW_TOTAL);
             }
 
-            log.info("开始填充物流链接 - 文件ID: {}, 工作表ID: {}, 起始行: {}, 结束行: {}, 上次最大行: {}",
-                fileId, sheetId, startRow, endRow, lastMaxRow);
+            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");
 
             // 读取表格数据（先读取表头行用于识别列位置）
             // 根据官方文档，使用 A1 表示法（Excel格式）
@@ -1156,16 +1169,16 @@ public class TencentDocController extends BaseController {
             log.info("列位置识别完成 - 单号: {}, 物流单号: {}, 备注: {}, 是否安排: {}, 标记: {}, 下单电话: {}",
                 orderNoColumn, logisticsLinkColumn, remarkColumn, arrangedColumn, markColumn, phoneColumn);
 
-            // 读取数据行：严格限制单次行数（避免 range invalid），失败时逐步缩小范围重试
-            int effectiveEndRow = Math.min(endRow, startRow + API_MAX_ROWS_PER_REQUEST - 1);
+            // 读取数据行：接口实际只能读 200 行，严格限制单次行数，失败时逐步缩小范围重试
+            int effectiveEndRow = Math.min(endRow, startRow + READ_ROWS_WHEN_USE_ROW_TOTAL - 1);
             JSONObject sheetData = null;
             int[] retryDecrements = new int[] { 0, 20, 50, 100 };
             for (int decrement : retryDecrements) {
                 int tryEndRow = Math.max(startRow, effectiveEndRow - decrement);
                 int tryRowCount = tryEndRow - startRow + 1;
-                if (tryRowCount > API_MAX_ROWS_PER_REQUEST) {
-                    tryEndRow = startRow + API_MAX_ROWS_PER_REQUEST - 1;
-                    tryRowCount = API_MAX_ROWS_PER_REQUEST;
+                if (tryRowCount > READ_ROWS_WHEN_USE_ROW_TOTAL) {
+                    tryEndRow = startRow + READ_ROWS_WHEN_USE_ROW_TOTAL - 1;
+                    tryRowCount = READ_ROWS_WHEN_USE_ROW_TOTAL;
                 }
                 if (tryEndRow < startRow) {
                     continue;
diff --git a/ruoyi-system/src/main/java/com/ruoyi/jarvis/service/ITencentDocService.java b/ruoyi-system/src/main/java/com/ruoyi/jarvis/service/ITencentDocService.java
index 0b528ef..bfa65c2 100644
--- a/ruoyi-system/src/main/java/com/ruoyi/jarvis/service/ITencentDocService.java
+++ b/ruoyi-system/src/main/java/com/ruoyi/jarvis/service/ITencentDocService.java
@@ -97,6 +97,16 @@ public interface ITencentDocService {
      * @return 工作表列表
      */
     JSONObject getSheetList(String accessToken, String fileId);
+
+    /**
+     * 获取指定工作表的 rowTotal（文档信息接口返回，直接用于 range 上限）
+     *
+     * @param accessToken 访问令牌
+     * @param fileId 文件ID
+     * @param sheetId 工作表ID
+     * @return rowTotal，未找到或解析失败返回 0
+     */
+    int getSheetRowTotal(String accessToken, String fileId, String sheetId);
     
     /**
      * 获取用户信息
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 d865dd9..37de8c7 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
@@ -562,6 +562,53 @@ public class TencentDocServiceImpl implements ITencentDocService {
         }
     }
 
+    @Override
+    public int getSheetRowTotal(String accessToken, String fileId, String sheetId) {
+        if (accessToken == null || fileId == null || sheetId == null) {
+            return 0;
+        }
+        try {
+            JSONObject result = getFileInfo(accessToken, fileId);
+            if (result == null) {
+                return 0;
+            }
+            // 兼容多种返回结构：data.properties[]、properties[]、sheets[].properties
+            com.alibaba.fastjson2.JSONArray list = null;
+            if (result.containsKey("data")) {
+                com.alibaba.fastjson2.JSONObject data = result.getJSONObject("data");
+                if (data != null && data.containsKey("properties")) {
+                    list = data.getJSONArray("properties");
+                } else if (data != null && data.containsKey("sheets")) {
+                    list = data.getJSONArray("sheets");
+                }
+            }
+            if (list == null && result.containsKey("properties")) {
+                list = result.getJSONArray("properties");
+            }
+            if (list == null && result.containsKey("sheets")) {
+                list = result.getJSONArray("sheets");
+            }
+            if (list == null) {
+                return 0;
+            }
+            for (int i = 0; i < list.size(); i++) {
+                com.alibaba.fastjson2.JSONObject item = list.getJSONObject(i);
+                com.alibaba.fastjson2.JSONObject props = item.containsKey("properties") ? item.getJSONObject("properties") : item;
+                if (props == null) {
+                    continue;
+                }
+                String sid = props.getString("sheetId");
+                if (sheetId.equals(sid) && props.containsKey("rowTotal")) {
+                    return Math.max(0, props.getIntValue("rowTotal"));
+                }
+            }
+            return 0;
+        } catch (Exception e) {
+            log.warn("获取工作表 rowTotal 失败 - fileId: {}, sheetId: {}", fileId, sheetId, e);
+            return 0;
+        }
+    }
+
     @Override
     public JSONObject getUserInfo(String accessToken) {
         try {