The research methods used in the article mainly include literature research method and case research method. The literature research method is mainly through the book materials and thesis literature, and combined with the network resources, to find information related to the research content of the thesis, so that the research of the thesis has theoretical support. The case study method is based on the working capital management theory and analyzes the problems in Baoshan Iron & Steel Co., Ltd. ’s working capital management. Analyze the causes of management problems, find out the reasons for the low efficiency of corporate working capital management, and put forward suggestions for improvement.