Sustainable growth is a balanced growth model for the company to maintain its financial resources and operating status. In recent years, facing the difficult period of coal industry development, the sustainable development is particularly important to enterprises. The article takes Yitai Company as an example and selects the financial data from 2013 to 2017 to study. Based on Higgins' sustainable growth model, we analyze the financial status of Yitai Company from both financial and operational aspects. What's more, we analyze the specific reasons for the formation of the sustainable growth deviation of Yitai Group, find the problems of the company, and provided some useful suggestions for the future development of Yitai Group.