Based on the brief introduction to the basic situation of CHN Energy，this report takes Shendong Coal Group Co.，Ltd.，a key coal producer as an example，makes a specific introduction to the understanding，difficulties，practices and achievements of the shift from high-speed growth to high-quality development of the coal industry. It also puts forward relevant policy recommendations in terms of relevant regulations and standards on ecological environment，coal resource planning，support for the training of coal talents，application of new technologies and materials，and sustainable development fund for coal enterprises.