Is someone bugging you on Wechat? ¬†Follow these steps to block that person. wechat block someone 1. Open Wechat. 2. Go to contacts tab. 3. Select the contact that you want to block. 4. While on the persons profile, you can find a button with three white dots on the top right part of the screen. 5. Select Moments Options. 6. Then turn on “Add to block list”.