关键词: 新型农村社会养老保险, 同群效应, 参与率, 缴费水平

Abstract: Based on the data of CHIP2013 and CHIP2018，the paper uses the instrumental variable method to study the role of the peer effect in rural residents participation in the social insurance of urban and rural residents It is found that：Firstly，for every 1% increase in the participation rate of peers，the individual participation probability of residents increases by 0129%~0174% Secondly，for every 1% increase in the payment of peers，the individual payment of residents increases by 0654%~0660%. Thirdly，the average payment level of peers is increased by 1 level，and the probability of the actual payment level of individuals is increased by 384%~444% Fourthly，under certain conditions，the peer effects is larger in large clusters than that in small clustersFinally，the participation behavior of female，highlyeducated and young residents has a greater demonstration effect These results imply social norms and social learning are the main mechanisms of the peer effect

Key words: new rural pension scheme, peer effects, participation rate, payment level