This study takes 10 provincial mainstream news portals in China as the research object。According to the evaluation index system constructed by the general theory，we makes quantitative statistics and Analysis on the front page news columns of these 10 websites. The results show that the social responsibility performance of provincial mainstream news portals is in good condition as a whole，and the main problems are as follows：the ability to control the agenda setting and public opinion guidance is insufficient，there is a large space for improvement in the leading way of mainstream value，the quality control behavior of current political headlines needs to be optimized，and the user behavior needs to be further subdivided In order to form a good interactive atmosphere. Therefore，this study proposes to improve from the following aspects：the portal news website needs to strengthen the sense of responsibility，actively integrate into the new communication ecology，improve the content production mechanism，focus on the local social service function，actively carry out internal and external cultural communication，and improve the breadth of social responsibility while enhancing the cultural thickness.