Abstract: A reasonable apportion mining between thin and thick coal seam can reduce the loss of coal resources and improve the coal recovery ratio.Through the calculation of the reasonable ratio of thin coal seam mining and the actual recovery ratio,determine the reasonable ratio of thin coal seam mining,and make the total average of the reasonable ratio tend to 1 in a certain period of time.In order to ensure no loss of thick seam,provide some suggestions to control and solve thick seam with mining maladjustment.