Zhihu's recommendation mechanism consists of three parts: dynamic ranking mechanism, message gray level reminding mechanism and anti-cheating mechanism. Among them, the dynamic ranking mechanism affects Zhihu's ranking mechanism not only by the number of likes, but also by other factors, such as the number of objections, collections, thanks, comments, publishing time, account weight and so on. Answers with higher weight and higher approval are more likely to rank before those with fewer votes. The message gray-scale reminding mechanism means that when a new answer is released to a question or topic that users are concerned about, a message will be sent in the station to remind users. Anti-cheating mechanism means that Zhihu will crack down on cheating, such as brushing praises and fans.