中文摘要：

众筹融资作为互联网金融的模式之一正在迅速发展,项目回报档数的多样性设计和项目回报之间的差异性设计对于促进众筹项目融资成功至关重要。本文以投资回报作为切入点,利用来自国内四大众筹平台的622个数据研究项目回报档数对项目融资成功率的影响,结果显示：除了出版类这种回报产品只能比较单一的项目外,其他类型项目的回报档数均与项目融资成功率呈现正相关关系,合理且利于提高项目融资成功率的项目回报档数应设计成7至15档。

英文摘要：

As a model of Internet finance,crowdfunding is rapidly developing nowadays,and larger number of returns and the differences among the returns are vital to raise the success rate of crowdfunding projects. The paper studies the impacts of the number of each project＇s returns on the success rate of crowdfunding project by using the date of 622 crowd funding projects hosted on domestic four crowdfunding platforms. The empirical results show the number of returns in crodfunding project is positively related to the success rate of crowfunding projects except those projects whose returns must be books,the number of returns should be 7 to 15 if the fund- raisers want to raise the success rate of their projects.