Abstract: In the era of "Internet +", the comprehensive education departments of universities strive to classify students and make personalized guidance accurately. In general, BBS communities of a university, whose data is highly reliable and can be mined, have special comparative advantage, practical function and goal significance in the social interaction among students. Based on the dynamic and steady-state characteristics of BBS in universities, the individual behavior model, group behavior model, public opinion dissemination model, and building online and downlink behavior evaluation model in the "Future Garden" BBS Community of Beihang University can provide us methods to explore the feasible path of carrying out precision education with BBS in universities