diff --git a/extend/base/admin/service/AdminUpdateServiceBase.php b/extend/base/admin/service/AdminUpdateServiceBase.php
index c1f8fd1..b32c62a 100644
--- a/extend/base/admin/service/AdminUpdateServiceBase.php
+++ b/extend/base/admin/service/AdminUpdateServiceBase.php
@@ -31,6 +31,7 @@ class AdminUpdateServiceBase
     public $forceConflict = null;     // null=未指定(走交互), overwrite|skip|ask
     public $showScope = null;         // null=未指定(默认all), all|conflict
     public $keepRepo = false;         // dry-run模式下保留上游克隆目录
+    public $fetchOnly = false;  // 仅拉取上游代码，不执行对比和更新
     public $skippedConflictFiles = []; // [file_path => ['type' => 'add|delete|update', 'category' => 'optional|force']]
 
     /**
@@ -112,8 +113,10 @@ class AdminUpdateServiceBase
             if ($last_version == $current_version) {
                 $output->writeln('当前版本为最新版本');
 
-                if ((bool)$input->getOption('reinstall')) {
-                    $output->writeln('重装代码');
+                if ((bool)$input->getOption('reinstall') || $this->fetchOnly) {
+                    if ((bool)$input->getOption('reinstall')) {
+                        $output->writeln('重装代码');
+                    }
                 } else {
                     $this->cleanWorkpaceDir();
 
@@ -187,6 +190,73 @@ class AdminUpdateServiceBase
             $changed_files[$file_path] = 'update';
         }
 
+        // 纯拉取模式：过滤实际变更、输出目录路径和变更清单，不执行任何更新
+        if ($this->fetchOnly) {
+            // 关键：$changed_files['update'] 来自 array_intersect（第184行），包含两个版本共有的所有文件
+            // 需进一步用 PathTools::compareFiles 做内容比较，过滤掉内容实际未变化的文件
+            $actual_changes = [];
+            foreach ($changed_files as $fp => $type) {
+                if ($type === 'update') {
+                    $now_fp = $now_dir . '/' . $fp;
+                    $last_fp = $last_version_dir . '/' . $fp;
+                    if (file_exists($now_fp) && file_exists($last_fp)
+                        && !PathTools::compareFiles($now_fp, $last_fp)) {
+                        $actual_changes[$fp] = $type;
+                    }
+                } else {
+                    // add/delete 始终是实际差异（基于 array_diff，不存在内容比较问题）
+                    $actual_changes[$fp] = $type;
+                }
+            }
+            $changed_files = $actual_changes;
+
+            $output->writeln('');
+            $output->writeln('[纯拉取模式] 上游代码已就绪，未执行任何更新。');
+            $output->writeln('  当前版本: ' . $current_version);
+            $output->writeln('  最新版本: ' . $last_version);
+            $output->writeln('');
+            $output->writeln('代码目录:');
+            $output->writeln('  当前版本原始代码: ' . $current_version_dir);
+            $output->writeln('  上游最新代码: ' . $last_version_dir);
+            $output->writeln('  开发者代码: ' . $now_dir);
+            $output->writeln('');
+            $add_count = count(array_filter($changed_files, fn($t) => $t === 'add'));
+            $delete_count = count(array_filter($changed_files, fn($t) => $t === 'delete'));
+            $update_count = count(array_filter($changed_files, fn($t) => $t === 'update'));
+            $output->writeln("变更清单: 新增 {$add_count}, 删除 {$delete_count}, 更新 {$update_count}");
+            if (count($changed_files) > 5) {
+                $groups = [];
+                $dir_order = ['extend/base/', 'extend/think/', 'app/', 'config/', 'route/', 'public/', 'database/', 'composer'];
+                foreach ($changed_files as $fp => $type) {
+                    $group_name = '其他';
+                    foreach ($dir_order as $prefix) {
+                        if (str_starts_with($fp, $prefix)) {
+                            $group_name = $prefix;
+                            break;
+                        }
+                    }
+                    if (strpos($fp, '/') === false) {
+                        $group_name = '根目录';
+                    }
+                    $groups[$group_name][$fp] = $type;
+                }
+                foreach ($groups as $group_name => $files) {
+                    $output->writeln("  [{$group_name}]");
+                    foreach ($files as $fp => $type) {
+                        $output->writeln("    [{$type}] " . $fp);
+                    }
+                }
+            } else {
+                foreach ($changed_files as $fp => $type) {
+                    $output->writeln("  [{$type}] " . $fp);
+                }
+            }
+            $output->writeln('');
+            $output->writeln('请自行对比三份代码，手动合并所需的变更。');
+            $output->writeln('完成后删除 runtime/update/ 目录，或下次运行 admin:update 时自动清理。');
+            return;
+        }
+
         // 提示用户有一些完全跟踪的文件被修改了
 
         $optional_update_waring_files = [];
diff --git a/extend/base/common/command/admin/UpdateBase.php b/extend/base/common/command/admin/UpdateBase.php
index 27d411b..da5598c 100644
--- a/extend/base/common/command/admin/UpdateBase.php
+++ b/extend/base/common/command/admin/UpdateBase.php
@@ -29,6 +29,7 @@ class UpdateBase extends Command
             ->addOption('force-conflict', null, Option::VALUE_OPTIONAL, '强制文件冲突处理策略: overwrite|skip|ask')
             ->addOption('show', null, Option::VALUE_OPTIONAL, '变更输出范围: all|conflict')
             ->addOption('keep-repo', null, Option::VALUE_NONE, '预览模式下保留上游克隆目录，便于手动对比跳过的文件')
+            ->addOption('fetch-only', null, Option::VALUE_NONE, '仅拉取上游代码到本地，不执行对比和更新')
             ->setDescription('更新系统代码');
     }
 
@@ -51,6 +52,7 @@ class UpdateBase extends Command
         $update_service->forceConflict = $input->getOption('force-conflict') ?: null;
         $update_service->showScope = $input->getOption('show') ?: null;
         $update_service->keepRepo = (bool)$input->getOption('keep-repo');
+        $update_service->fetchOnly = (bool)$input->getOption('fetch-only');
 
         $update_service->update();
     }