With the increasing popularity and development of Internet, a new mode of interactive groups named network community come up. Douban Website which is one of the most successful Web 2.0 website in China gains praise from users. Based on the Unified Theory of Acceptance and Use of Technology, this study aims at examining the factors that affect the participation behavior of network website users by using Douban Website as an example. The results find that : (1)performance expectancy, effort expectancy, social influence have a positive impact on the using willingness of network community; (2) performance expectancy, effort expectancy, social influence, using willingness have a positive impact on the using behavior of network community; (3) facilitating conditions have no significant impact on the behavior of network community; (4) the moderating effect of gender is not significant, but the performance expectancy-using willingness relationships is significantly moderated by experience with network community.