Abstract:Financing ability evaluation is very important to enhance the financing ability of science and technology SMEs, which is the primary prerequisite to clear up the financing obstacles for science and technology SMEs. Traditional view only emphasized the role of the ability of the enterprises themselves, while ignoring the financing environment research. Therefore, taking the balance between self-ability and financing environment as the starting point, using the catastrophe progression to evaluate the financing ability of the SMEs of 26 provinces and cities in China, and then using the improved the obstacle factor model to analysis the financing capacity of China"s small and medium-sized enterprises the main obstacle factors. The results showed that: (1) The financing capacity of SMEs in China is increasing from west to east coast; (2) The obstacle factors of financing ability of middle and small enterprises in different provinces and municipalities are obviously different; (3) The quick ratio, current ratio, accounts receivable turnover rate, marketization of scientific and technological achievements and market intermediary development are the "short-board factors" that restrict the financing ability of Chinese SMEs. Finally, according to the distribution of financing ability of the SMEs of science and technology in the provinces and the main obstacle factors, the corresponding countermeasures and suggestions are put forward.