In the past 40 years of reform and opening up, while the Chinese domestic economy has enjoyed a period of rapid development high-polluting industrial projects have caused significant environmental damage. Unfortunately, such cases are not rare, but rather occur with alarming frequency. These projects damage ecologies, impair human health, interfere with animal reproduction and survival, and ultimately result in substantial economic losses. For this reason, the Chinese government has echoed and acted on the calls of broader Chinese society that the economic priorities of the country be adjusted to emphasize sustainability. In order to solve the problems of environmental pollution and lack of funds for the development of green industry, the Chinese government has vigorously promoted the green credit business in the field of commercial Banks, which is conducive to promote the sustainable development of China's environment. Due to a lack of the intrinsic development motivation, banks tend to regard the green credit business as the public welfare activity all the time. Therefore, it is an urgent problem need to be solved in China at the present stage. This paper will explore how the green credit business of Chinese commercial Banks can achieve better profits and how the green credit business affects the performance of commercial Banks. As a step towards solving the problem of environmental pollution and prioritizing the development of sustainable ‘green’ industry, the Chinese government has vigorously promoted the green credit business of commercial banks. These commercial banks, however, have always regarded their green credit business as an act of public welfare, and as such often allow this aspect of their business to languish. This paper examines 16 A-share listed commercial banks in China and determines the impact of their green credit business on their business performance, i.e. their profitability, liquidity, and security. The results show that the green credit business had a significant positive influence on the achieved by commercial banks, which can promote the improvement of commercial bank’s profitability. The results also indicate that the green credit business and commercial bank's non-performing loan rate is U-shaped relationship. It can be concluded that a green credit business can significantly improve bank’s loan structure, optimize the quality of its assets, and improve its liquidity and security.