diff --git a/apps/ai-game-creator-shell/src-tauri/design-agent/tools.json b/apps/ai-game-creator-shell/src-tauri/design-agent/tools.json
index 06c643c6b..c9c1bd6cf 100644
--- a/apps/ai-game-creator-shell/src-tauri/design-agent/tools.json
+++ b/apps/ai-game-creator-shell/src-tauri/design-agent/tools.json
@@ -2,7 +2,7 @@
   {"type":"function","function":{"name":"get_workflow_status","description":"读取当前策划工作流状态，只返回阶段列表、当前阶段、已批准阶段和待审批阶段；不推进阶段、不提交审批、不修改文件。","parameters":{"type":"object","properties":{},"additionalProperties":false}}},
   {"type":"function","function":{"name":"list_resources","description":"列出固定资源的逻辑目录、资源 ID、标题和简介。资源是只读的随包文档；不要猜测物理路径。","parameters":{"type":"object","properties":{},"additionalProperties":false}}},
   {"type":"function","function":{"name":"read_resource","description":"读取一份固定资源文档全文。每次读取一个 resource_id；资源只读。读到未实现占位文档时由你自行判断和处理。","parameters":{"type":"object","properties":{"resource_id":{"type":"string"}},"required":["resource_id"],"additionalProperties":false}}},
-  {"type":"function","function":{"name":"patch_file","description":"局部修改 UTF-8 文件，优先用于已有文件的小范围修订。先读文件，以唯一且非空的 old_text 精确匹配并替换为 new_text；new_text 为空可删除片段，保留原文并追加可插入。匹配失败不修改文件。path 使用相对路径。","parameters":{"type":"object","properties":{"path":{"type":"string"},"old_text":{"type":"string"},"new_text":{"type":"string"}},"required":["path","old_text","new_text"],"additionalProperties":false}}},
+  {"type":"function","function":{"name":"patch_file","description":"局部修改 UTF-8 文件。使用 old_text/new_text，或使用 edits 一次进行多个独立替换；每个 old_text 必须非空且在原文件中唯一，匹配失败、重复或范围重叠时不修改文件。path 使用相对路径。","parameters":{"type":"object","properties":{"path":{"type":"string"},"old_text":{"type":"string"},"new_text":{"type":"string"},"edits":{"type":"array","items":{"type":"object","properties":{"old_text":{"type":"string"},"new_text":{"type":"string"}},"required":["old_text","new_text"],"additionalProperties":false}}},"required":["path"],"additionalProperties":false}}},
   {"type":"function","function":{"name":"delete_path","description":"谨慎使用；永久删除工作区内的文件或目录；目录会连同全部内容递归删除，不备份。先确认目标及删除范围。path 使用相对路径，不能删除工作区根目录，也不能经过链接。","parameters":{"type":"object","properties":{"path":{"type":"string"}},"required":["path"],"additionalProperties":false}}},
   {"type":"function","function":{"name":"list_dir","description":"列出工作目录内的文件和目录。path 使用相对路径。","parameters":{"type":"object","properties":{"path":{"type":"string"}},"required":["path"],"additionalProperties":false}}},
   {"type":"function","function":{"name":"read_file","description":"读取工作目录内的 UTF-8 文本文件。path 使用相对路径。","parameters":{"type":"object","properties":{"path":{"type":"string"}},"required":["path"],"additionalProperties":false}}},
diff --git a/apps/ai-game-creator-shell/src-tauri/src/agent/design_tools.rs b/apps/ai-game-creator-shell/src-tauri/src/agent/design_tools.rs
index 6d65f9dd3..954793b1a 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/agent/design_tools.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/agent/design_tools.rs
@@ -264,22 +264,45 @@ pub(crate) fn execute_design_file_tool(
         }
         "patch_file" => {
             let relative = required_tool_path(args)?;
-            let old = args
-                .get("old_text")
-                .and_then(Value::as_str)
-                .ok_or("缺少 old_text")?;
-            let new = args
-                .get("new_text")
-                .and_then(Value::as_str)
-                .ok_or("缺少 new_text")?;
-            if old.is_empty() {
-                return Err("old_text 不能为空".to_string());
-            }
+            let edits = if let Some(items) = args.get("edits").and_then(Value::as_array) {
+                if items.is_empty() {
+                    return Err("edits 不能为空".to_string());
+                }
+                items
+                    .iter()
+                    .enumerate()
+                    .map(|(index, item)| {
+                        let old = item
+                            .get("old_text")
+                            .and_then(Value::as_str)
+                            .ok_or_else(|| format!("edits[{index}].old_text 必须是字符串"))?;
+                        let new = item
+                            .get("new_text")
+                            .and_then(Value::as_str)
+                            .ok_or_else(|| format!("edits[{index}].new_text 必须是字符串"))?;
+                        if old.is_empty() {
+                            return Err(format!("edits[{index}].old_text 不能为空"));
+                        }
+                        Ok((old.to_string(), new.to_string()))
+                    })
+                    .collect::<Result<Vec<_>, String>>()?
+            } else {
+                let old = args
+                    .get("old_text")
+                    .and_then(Value::as_str)
+                    .ok_or("缺少 old_text")?;
+                let new = args
+                    .get("new_text")
+                    .and_then(Value::as_str)
+                    .ok_or("缺少 new_text")?;
+                if old.is_empty() {
+                    return Err("old_text 不能为空".to_string());
+                }
+                vec![(old.to_string(), new.to_string())]
+            };
             let (display, path) = resolve_design_workspace_path(root, &relative)?;
             if !path.is_file() {
-                return Ok(Value::String(format!(
-                    "局部修改失败：文件不存在：{display}"
-                )));
+                return Err(format!("文件不存在：{display}"));
             }
             let content =
                 fs::read_to_string(&path).map_err(|error| format!("读取失败：{error}"))?;
@@ -288,20 +311,52 @@ pub(crate) fn execute_design_file_tool(
             } else {
                 "\n"
             };
-            let old = old.replace("\r\n", "\n").replace('\n', newline);
-            let new = new.replace("\r\n", "\n").replace('\n', newline);
-            let count = content.matches(&old).count();
-            if count != 1 {
-                return Err(format!(
-                    "原文匹配 {count} 处，需要唯一匹配；请重新读取文件并扩大匹配范围"
-                ));
+            let normalized = edits
+                .into_iter()
+                .map(|(old, new)| {
+                    (
+                        old.replace("\r\n", "\n").replace('\n', newline),
+                        new.replace("\r\n", "\n").replace('\n', newline),
+                    )
+                })
+                .collect::<Vec<_>>();
+            let mut matches = Vec::new();
+            for (index, (old, new)) in normalized.iter().enumerate() {
+                let count = content.matches(old).count();
+                if count == 0 {
+                    return Err(format!("edits[{index}] 原文未找到：{display}"));
+                }
+                if count != 1 {
+                    return Err(format!(
+                        "edits[{index}] 原文匹配 {count} 处，必须唯一：{display}"
+                    ));
+                }
+                let start = content.find(old).expect("count checked");
+                let end = start + old.len();
+                if let Some((other_index, _other_start, _other_end)) = matches
+                    .iter()
+                    .find(|(_, other_start, other_end)| start < *_other_end && *_other_start < end)
+                {
+                    return Err(format!(
+                        "edits[{index}] 与 edits[{other_index}] 修改范围重叠：{display}"
+                    ));
+                }
+                matches.push((index, start, end));
+                let _ = new;
             }
-            crate::write_game_creator_private_file(
-                &path,
-                content.replacen(&old, &new, 1).as_bytes(),
-                "策划工作区文件",
-            )?;
-            Ok(Value::String(format!("已局部修改 {display}")))
+            let mut updated = content.clone();
+            for (index, start, end) in matches.into_iter().rev() {
+                let (_, new) = &normalized[index];
+                updated.replace_range(start..end, new);
+            }
+            if updated == content {
+                return Err(format!("没有产生修改：{display}"));
+            }
+            crate::write_game_creator_private_file(&path, updated.as_bytes(), "策划工作区文件")?;
+            Ok(Value::String(format!(
+                "已局部修改 {display}（{} 处）",
+                normalized.len()
+            )))
         }
         "delete_path" => {
             let relative = required_tool_path(args)?;
@@ -645,6 +700,29 @@ mod tests {
         )
         .expect("patch");
         assert!(patched.as_str().unwrap().contains("已局部修改"));
+        execute_design_file_tool(
+            root,
+            "write_file",
+            &json!({"path":"notes/multi.md","content":"甲\n乙\n丙"}),
+        )
+        .expect("write multi");
+        let multi = execute_design_file_tool(
+            root,
+            "patch_file",
+            &json!({
+                "path":"notes/multi.md",
+                "edits":[
+                    {"old_text":"甲","new_text":"一"},
+                    {"old_text":"丙","new_text":"三"}
+                ]
+            }),
+        )
+        .expect("multi patch");
+        assert!(multi.as_str().unwrap().contains("2 处"));
+        assert_eq!(
+            fs::read_to_string(root.join("design_artifacts/notes/multi.md")).expect("read multi"),
+            "一\n乙\n三"
+        );
         execute_design_file_tool(root, "delete_path", &json!({"path":"notes"}))
             .expect("delete dir");
         assert!(!root.join("design_artifacts/notes").exists());