中文摘要：

银行和企业通过抱团、组建联盟来充分运用和整合市场资源，抱团能给银行、企业注入竞争与发展的强大活力，使其携手应对严峻形势，度过“寒冬”，那么在互联网金融领域，借款人通过抱团、加入群组，是否能够像银行或企业那样“取暖”。本文选取Prosper网络借贷平台上的交易数据为样本，从五个视角实证分析群组制度对P2P网络借贷行为的影响，结果显示不同借款人选择是否抱团的策略不同，借款人抱团在一定程度上可以“取暖”，但不同借款人的“取暖效果”不同。具体而言：信用等级越低的借款人更倾向于加入群组，并且加入群组对其借款成功率和借款利率的影响更为明显；加入群组可以显著地提高借款成功率，降低借款利率，提高筹资效率，但加入群组的借款人的事后还款表现欠佳，违约率偏高。本文的研究为国内P2P网络平台借贷的健康发展提供了有益借鉴。

英文摘要：

Banks and enterprises make full use of market resources and integrate them through ＂baotuan＂ and alliances. Holding together can push banks and enterprises to inject the strong vitality of competition and development, to join hands to cope with the grim situation, and to pull through the ＂economic winter＂. Then in the field of internet finance, can borrowers hold together for warmth just like banks or enterprises？ This paper uses lending transaction data from the Prosper network lending platform as the sample to test the impact of group system on lending behavior from five perspectives. The main results show that： different borrowers have different strategies on joining the groups. Borrowers can hold together for warmth to a certain extent, but the ＂warmth effect＂ varies with different borrowers. Specifically speaking, firstly, the borrowers with lower credit rating are more inclined to join the groups, and the effects of joining the groups on the success and interest rates of borrowing are more obvious; secondly, to join the groups can increase the success rate of borrowing, reduce interest rates and raise borrowing efficiency, but for the borrowers in the groups, their repayment performance is not good and they have higher default rates. It provides a useful reference for the healthy development of domestic P2P network platform lending.