Abstract: In order to cater to the need for better adaption to variation of raw coal property,Wugou Coal Mines existing coal cleaning system remoulding and extension scheme is determined following an analysis of the current operating status,and ongoing transformation work is gradually pushing ahead according to specific conditions.After the adoption of a series of remoulding measures,the coal cleaning system now works with a much higher adaptability and more flexibility of technological process.The technical reform has met with remarkable result,bring about much improved economical,social and environmental benefits.