Based on the test results of industrial indexes and chemical compositions of main coal seams in Xilin Mine, the correlation of various parameters was systematically analyzed systematically. The results showed that there was a positive correlation between the volatile content, the calorific value and the hydrogen content, and the fixed carbon had a positive correlation with the calorific value and carbon content, and the calorific value was positively correlated with the carbon content and hydrogen content, while the ash content was negatively correlated with the calorific value. The evaluation result accorded with the general law of coal and rock quality, which confirmed the reliability of exploration test results.