This paper analyzes the microblogging text feature information, and proposes a microblogging feature extraction method based on improved chi-square statistic. Firstly, the microblogging information classification features are expanded,microblogging features are increased frequency and other factors. It improves the traditional feature selection methods.Then, based on the traditional feature item weight calculation, the paper proposes a new improved method of CHI-square statistic for improving weight calcula...