As the economy continuously develops, environmental problems are becoming increasingly serious. Companies need to improve their competitiveness if they want to continue to develop steadily. In order to compete for customers and expand the scale of sales, companies would carry out various credit sales methods to attract more customers and gain more profits under the fierce marketization, but at the same time, a large amount of waste would be discharged into the ecological environment, resulting in ecological damage and environmental pollution. This has seriously affected the economic benefits. Therefore, it needs to be scientifically and effectively controlled and managed to achieve sustainable development. This paper proposed to apply Artificial Intelligence (AI) to the Financial Management (FM) of environment-friendly companies, analyze the stability of the sustainable development ability of company FM, and put forward countermeasures to realize the sustainable development strategy of environment-friendly company FM by analyzing the problems related to the implementation of the financial strategy of environment-friendly companies. Through the company development environmental protection index test, company sustainable development stability test and management model comprehensive scoring test of different environment-friendly companies, it was found that AI can effectively reduce the financial risk index in the FM of environment-friendly companies. The application of AI has improved the development and environmental protection index of companies. The company FM model based on AI can improve the stability of the sustainable development ability of environmental protection company FM. Applying AI to company FM can improve its comprehensive score, and the comprehensive score of management mode has increased by 7.8%.