With the increasing popularity of the Internet，the Internet has become a more and more common channel for people to express their emotions，attitudes and values. When the Internet has gradually become the birthplace and the gathering field of public opinion，the social mentality of netizens have become the “barometer” and “wind vane” of the current social situation. This study aimed at tracking the performance of netizens in Guangdong province in 2015 year，use content analysis and questionnaire survey to analysis their social psychology such as concerns of social issues and social experience. The results found that，on the whole，the positive emotions was higher than the negative emotions in Guangdong micro-blog Internet users，they more concerned about the issue of people’s livelihood，which was partial to actual situation. But specifically，the social mentality of netizens in different regions of Guangdong province was quite different.