In recent years, many WeChat users' friend dialogs have received a mass message with the content "Clear powder, don't reply" every once in a while. Under the frequent usage habits of WeChat users, this kind of information about testing zombie fans has become the profit target targeted by businesses. So this kind of mass message has gradually changed from the initial user's own writing to the promotion link with the help of third-party powder cleaning software. It is reported that there are three main forms to promote the powder-sweeping software through mass sending, namely, micro-signal, and WeChat users add friend consultation products, that is, promote them in the form of WeChat friends; Attach the official WeChat account to let others pay attention, that is, promote it in the form of WeChat public platform; The platform link directly attached to the software is promoted through the association of third-party software after clicking.