As Wechat becomes more and more popular，rumors among Wechat friends’circle and public accounts emerge and bring a lot of misleading information to the public. Security department of Wechat declares that they averagely intercept more than 2100000 pieces of rumors every day. The rumor spreading of public accounts on Wechat is quite special due to the factors of strong relationship and closed-system. This survey analyzes 625 pieces of rumors among public accounts of Wechat by using LIWC text analysis method. The results reveal that：（1） The spread of rumors among public accounts on Wechat features in time and space allocation. （2）The themes of rumors are mainly about food safety，personal security and disease.（3）Exaggerated statistics as well as plenty of terrible images are used to strengthen the spreading of such rumors.（4）Rumors carry seemingly rational words to convince the audience. All in all，rumors demonstrate the uncertain aspect of information. They cannot be eradicated，but we could distinguish them and reduce their negative effect according to its dissemination attributes.