Abstract: Decline in thermal coal demand, enterprises in order to broaden the market and improve the economic efficiency of enterprises, Pan Yidong Coal preparation process for the current system of coking coal system transformation; article analyzed the plant into the washing raw coal quality characteristic, and sufficiently utilized the basis of existing production systems, reducing investment in upgrading, selected the appropriate coal preparation process to achieve the purpose of the production of coking coal products. After transformation, the new system put into operation, and achieved good production and economic effect.