"Green Credit" is an innovative means to realize ecological and environmental protection with the leverage of market economy. It is also an important way to realize "Green GDP". As an important source of funds to support economic development, the development of green credit business is an inevitable trend for commercial banks. This paper takes the green credit business of Industrial and Commercial Bank of China as the research object, expounds the connotation of green credit, analyzes the current development status of green credit business of Industrial and Commercial Bank of China, points out some existing problems, finds out the reasons that restrict its development, and puts forward improvement strategies.