Abstract:Giving wind power industry effective allocation of innovative funds is conducive to China"s energy structure optimized in depth direction.In order to solve the existing theoretical debate on the role of credit,on the basis of mechanism analysis, this paper constructs a comprehensive index of technological innovation by entropy weight method to make up for the errors brought by single selection of traditional measurement indexes. Besides , establishing error correction model to test whether bank credit can support the technological innovation of wind power industry . The results show that bank credit and technological innovation not only have long-term balanced positive correlation, but also short-term adjustment error. The enlightenment is strengthening the management of credit risk of wind power projects, introducing private capital actively, and establishing policy system ,including supply and demand balance of innovation, will further play a positive role in bank credit to the technology innovation of wind power industry .