This research selects 5 video websites which are influential and representative in the industry，extracts the videos from the front page as the analysis samples，and measures with the aid of the new media social responsibility evaluation system. The results show that the performance of the information production function of the comprehensive video website has a loss：The authenticity，timeliness，depth and breadth of the information are good，the information control and the tort control are also better while the other aspects are not good. The social supervision function is lacking in all aspects. The cultural and educational functions are biased towards the entertainments neglecting other aspects；Coordination function focus on optimizing the user experience and interactive design is still available. But public service，online and offline communication are inadequate. The reason for this situation is：The functional positioning determines the responsibility performance，the tendency of marketization affects the level of their responsibility performance，and the current policies design limits the realization of their responsibility performance.