Regarding villagers’ overbuilding behavior in the process of government land acquisition in urbanization as a collective behavior,this paper analyzes the function of government’s intervention and information dissemination in the evolution process of villagers’ overbuilding behavior by using the event history analysis method. The study found that under the condition of government non-intervention and information fragmentation,the demonstration effect and opinion leadership effect of rural elites promoted the fermentation of overbuilding behavior. Under the condition of weak government intervention and information mutation,the normative flexibility behavior in the governmental administrative intervention strengthened villagers’ cognitive bias on the income and risk of overbuilding,and the mutated spread of information strengthened villagers’ income expectation on overbuilding behavior,and obscured the corresponding risk information,which in turn intensified the overbuilding behavior. Under the condition of strong government intervention and information restoration,villagers realized the cost of overbuilding was greater than the expected income and then stopped. Above all,the delay of government intervention and information asymmetry are crucial causes of collective behavior like overbuilding. It is supposed to strengthen the foresight of land planning,improve emergency response mechanism and reinforce the governance norms.