Abstract. This paper is based on WeChat index, at first, 5 industries which are closely related to the daily life of Wechat users in stock markets are selected randomly, they are retail, securities, media, clothing, home textiles, food processing and manufacturing. After that, we select 30 stocks from 5 different industries as the research object, take the data provided by WeChat index as a measure of investor attention, build panel data model to research on the relationship between investor attention and stock returns. Finally, according to the research results: Investors' attention is proportional to stock returns in the same period; reversal after positive impact.