diff --git a/metagpt/utils/__init__.py b/metagpt/utils/__init__.py
index 1c907f36f..26042eb0e 100644
--- a/metagpt/utils/__init__.py
+++ b/metagpt/utils/__init__.py
@@ -19,7 +19,7 @@ __all__ = [
     "read_docx",
     "Singleton",
     "TOKEN_COSTS",
-    "new_tid",
+    "new_transaction_id",
     "count_message_tokens",
     "count_string_tokens",
 ]
diff --git a/metagpt/utils/common.py b/metagpt/utils/common.py
index b6a1756c4..2b2a209be 100644
--- a/metagpt/utils/common.py
+++ b/metagpt/utils/common.py
@@ -1090,7 +1090,7 @@ def tool2name(cls, methods: List[str], entry) -> Dict[str, Any]:
     return mappings
 
 
-def new_tid(postfix_len=8) -> str:
+def new_transaction_id(postfix_len=8) -> str:
     """
     Generates a new unique transaction ID based on current timestamp and a random UUID.
 
diff --git a/tests/metagpt/utils/test_mermaid.py b/tests/metagpt/utils/test_mermaid.py
index 2aa60a6ee..1fbf060fe 100644
--- a/tests/metagpt/utils/test_mermaid.py
+++ b/tests/metagpt/utils/test_mermaid.py
@@ -9,7 +9,7 @@
 import pytest
 
 from metagpt.const import DEFAULT_WORKSPACE_ROOT
-from metagpt.utils.common import check_cmd_exists, new_tid
+from metagpt.utils.common import check_cmd_exists, new_transaction_id
 from metagpt.utils.mermaid import MMC1, mermaid_to_file
 
 
@@ -23,7 +23,7 @@ async def test_mermaid(engine, suffixes, context, mermaid_mocker):
     # playwright prerequisites: playwright install --with-deps chromium
     assert check_cmd_exists("npm") == 0
 
-    save_to = DEFAULT_WORKSPACE_ROOT / f"{new_tid()}/{engine}/1"
+    save_to = DEFAULT_WORKSPACE_ROOT / f"{new_transaction_id()}/{engine}/1"
     await mermaid_to_file(engine, MMC1, save_to, suffixes=suffixes)
 
     # ink does not support pdf