Hello, you can go to DingTalk mobile app/ desktop client: "Messages" > Select the group > right upper button > "Clear Messages". Please note, this operation can only clear up the chat records on your phone, the person who chats with you can still check the chat history. This operation cannot be restored. Please be careful. /p>

There is no function in clear up all chat history by one-click at the moment, you have to clear the records one by one.