According to the relevant information in the personal library, WeChat is a safe and green software. Even if there are a lot of group chats, logging in to WeChat on the computer won't hurt the computer, so it won't.

Wechat is a free application launched by Tencent on 20 1 1, which provides instant messaging service for intelligent terminals. Wechat supports fast and free voice messages, videos, pictures and texts across communication operators and operating system platforms (requiring a small amount of network traffic).