diff --git a/Windows/CS/Framework4.0/Updater/src/main.rs b/Windows/CS/Framework4.0/Updater/src/main.rs
index b7e61a1..f524c3a 100644
--- a/Windows/CS/Framework4.0/Updater/src/main.rs
+++ b/Windows/CS/Framework4.0/Updater/src/main.rs
@@ -1243,7 +1243,10 @@ fn scan_local_tmp_files(app_name: &str) -> Vec<(String, u64)> {
                                     .unwrap_or(&rel_str);
                                 // 获取文件大小
                                 if let Ok(metadata) = fs::metadata(&path) {
-                                    tmp_files.push((official_name.to_string(), metadata.len()));
+                                    // 跳过 0 字节的临时文件（MD5 无意义，视为从头续传）
+                                    if metadata.len() > 0 {
+                                        tmp_files.push((official_name.to_string(), metadata.len()));
+                                    }
                                 }
                             }
                         }
@@ -1760,22 +1763,28 @@ async fn run_updater(debug_mode: bool) -> bool {
                     let tmp_path = upgrade_base.join(&tmp_filename);
                     let has_tmp = tmp_path.exists();
                     let has_official = file_path.exists();
+                    let tmp_is_zero = has_tmp && tmp_path.metadata().map(|m| m.len() == 0).unwrap_or(false);
 
                     if has_tmp {
-                        // 情况A：本地有临时文件 → 比较临时文件
-                        let local_md5 = compute_file_md5(&tmp_path);
-                        if let Some(lm) = local_md5 {
-                            if &lm != server_md5 {
-                                // MD5 不对 → 清空临时文件内容
-                                log_print!("{} [AllFile] tmp {} MD5不一致 (本地={}, 服务端={})，清空", ts, tmp_filename, lm, server_md5);
-                                if let Ok(file) = fs::File::create(&tmp_path) {
-                                    let _ = file.set_len(0);
+                        if tmp_is_zero {
+                            // 情况0：本地有 0 字节临时文件（0 字节未上报服务端，无法比对 MD5）
+                            // 直接从 offset 0 断点续传
+                            request_download_for_app(&sender, &app_name, filename, 0);
+                            update_performed_clone2.store(true, std::sync::atomic::Ordering::SeqCst);
+                        } else {
+                            // 情况A：本地有临时文件（>0字节）→ 比较临时文件
+                            let local_md5 = compute_file_md5(&tmp_path);
+                            if let Some(lm) = local_md5 {
+                                if &lm != server_md5 {
+                                    log_print!("{} [AllFile] tmp {} MD5不一致 (本地={}, 服务端={})，清空", ts, tmp_filename, lm, server_md5);
+                                    if let Ok(file) = fs::File::create(&tmp_path) {
+                                        let _ = file.set_len(0);
+                                    }
+                                    request_download_for_app(&sender, &app_name, filename, 0);
+                                    update_performed_clone2.store(true, std::sync::atomic::Ordering::SeqCst);
+                                } else {
+                                    log_print!("{} [AllFile] tmp {} MD5一致，续传", ts, tmp_filename);
                                 }
-                                // 发送下载请求
-                                request_download_for_app(&sender, &app_name, filename, 0);
-                                update_performed_clone2.store(true, std::sync::atomic::Ordering::SeqCst);
-                            } else {
-                                log_print!("{} [AllFile] tmp {} MD5一致，续传", ts, tmp_filename);
                             }
                         }
                     } else if has_official {
@@ -1783,7 +1792,6 @@ async fn run_updater(debug_mode: bool) -> bool {
                         let local_md5 = compute_file_md5(&file_path);
                         if let Some(lm) = local_md5 {
                             if &lm != server_md5 {
-                                // MD5 不对 → 创建空的临时文件
                                 log_print!("{} [AllFile] {} MD5不一致 (本地={}, 服务端={})，创建 tmp", ts, filename, lm, server_md5);
                                 if let Some(parent) = tmp_path.parent() {
                                     let _ = fs::create_dir_all(parent);
@@ -1811,13 +1819,16 @@ async fn run_updater(debug_mode: bool) -> bool {
                     }
                 }
 
-                // 4. 为剩余的有效临时文件发送续传请求
+                // 4. 为有效的临时文件（>0字节）发送续传请求
                 for (filename, _, _) in &server_files {
                     let tmp_filename = format!("{}.tmp", filename);
                     let tmp_path = upgrade_base.join(&tmp_filename);
                     if tmp_path.exists() {
-                        // tmp 存在，发送续传请求
                         let file_size = fs::metadata(&tmp_path).map(|m| m.len()).unwrap_or(0);
+                        // 0 字节 tmp 已在步骤3中处理过，跳过
+                        if file_size == 0 {
+                            continue;
+                        }
                         request_download_for_app(&sender, &app_name, filename, file_size);
                     }
                 }