diff --git a/metagpt/actions/project_management.py b/metagpt/actions/project_management.py
index c95be4012..1f14e7944 100644
--- a/metagpt/actions/project_management.py
+++ b/metagpt/actions/project_management.py
@@ -99,7 +99,7 @@ class WriteTasks(Action):
     async def _merge(self, system_design_doc, task_doc, format=CONFIG.prompt_format) -> Document:
         context = NEW_REQ_TEMPLATE.format(context=system_design_doc.content, old_tasks=task_doc.content)
         node = await PM_NODE.fill(context, self.llm, format)
-        task_doc.content = node.content
+        task_doc.content = node.instruct_content.json(ensure_ascii=False)
         return task_doc
 
     @staticmethod
diff --git a/metagpt/utils/common.py b/metagpt/utils/common.py
index f08519f8e..a9bdd6e2d 100644
--- a/metagpt/utils/common.py
+++ b/metagpt/utils/common.py
@@ -223,10 +223,15 @@ class CodeParser:
         # 遍历所有的block
         for block in blocks:
             # 如果block不为空，则继续处理
-            if block.strip() != "":
+            if block.strip() == "":
+                continue
+            if "\n" not in block:
+                block_title = block
+                block_content = ""
+            else:
                 # 将block的标题和内容分开，并分别去掉前后的空白字符
                 block_title, block_content = block.split("\n", 1)
-                block_dict[block_title.strip()] = block_content.strip()
+            block_dict[block_title.strip()] = block_content.strip()
 
         return block_dict