Abstract: Wangjialing mine coal preparation plant is one of the four subprojects of the Wangjialing coal mine large scale comprehensive development project. In order to enable the engineering design to satisfy the needs of the coal preparation plant,the coal cleaning processes and main process equipment for use were selected on the basis of the analysis of the raw coal property while the general plan layout of the equipment was made in the light of the landform of the site. The plant has been in smooth operation for 4years. Its raw coal treating capacities reached 6. 05 Mt,7. 20 Mt and 8. 00 Mt respectively in 2013,2014 and 2015. According to statistical figures,on an every basis,the yield and ash of the clean coal are 65%and 9. 50% respectively while the power consumption is 7. 10（kW·h）/t and the medium consumption for treating each ton of raw coal is as low as 1. 00 kg. It shows that the plant is operating successfully according to designed specification in every aspect.