Small and micro enterprises play an important role in China's economic development, but for a long time, financing difficulties have been affecting the development of small and micro enterprises. Small and micro enterprises always encounter various problems in financing, such as small scale, weak risk tolerance, imperfect financial management system, high borrowing costs and so on, which hinder the normal financing of enterprises. This paper analyzes the main problems of financing of small and micro enterprises, and puts forward relevant suggestions from the aspects of government issuing corresponding supporting policies, banks innovating financial products, enterprises expanding financing channels and so on.