Abstract: With the development of social and economic level,the health consciousness of Chinese people is getting stronger and stronger,and the dairy industry has received great attention from consumers.As one of the top 20 companies in China's dairy industry,BYM Group has developed strongly since its establishment,focusing on the research and development and sales of baby food.This paper collected the financial data from 2018 to 2022 and used the DuPont analysis Method to analyze the profitability of BYM Group.The research found that the main factors affecting the profitability of BYM Group were the relatively high proportion of operating costs and sales expenses in total revenue,and put forward reasonable suggestions to this end.At the same time,it hopes to provide references for other dairy enterprises.

Key words: Dupont analysis, Chain substitution, profitability