The WeChat Public Account or Official Account is a new way of press release in China. This study selected 617 most popular WeChat public accounts run by kinds of media in November，2014 and used the WeChat Communication Index（WCI）to evaluate their communication effects in terms of type and region. This study pointed out several problems of the Public Accounts such as their limitation of information capacity，homogenization，lack of interaction and service function. It suggests the media should develop the service function of their Public Accounts，following the trends of decentralization，vertical distribution and socialization.