Using field research, case analysis, logical analysis, expert interviews and other methods, starting with the principal’s public sports participation in "net celebrity" behavior, the study focus on the level of citizen participation and the cause of this behavior. The results of the study show that: 1) The principal’s public participation in sports as a “net celebrity” behavior belongs to the active participation level of physical presence and intervention in public sports activities. 2) The general public in our country recognizes the identity of the principal; the network multimedia facilitates a wide range of perspectives; the superposition of the net celebrity effect is the cause of the "popularity" amplification effect of the principal's public sports participation behavior network.