The crowdfunding of small micro enterprise（XSME） is one of the theoretical and practical problems need to be solved in the process of pushing forward “mass entrepreneurship and innovation”. Discriminant sampling method was used to investigate the financing demand and financing behavior of SME in CZT region, the internal and external influence factors were tested by PROBIT model. The results show that, in the internal influence factors of enterprise, enterprise's main business and corporate culture have a positive impact on the crowdfunding demand, corporate life and operating income have an negative impact on the crowdfunding demand; in the external influence factors of enterprise, law support and financing costs have an positive impact on the crowdfunding demand of SME, the support from government and financial institutions have an negative impact on the crowdfunding demand. Finally, the relevant advice was put forward based on the conclusions.