Abstract: In order to improve coal washing efficiency for maximizing economic performance, a systematic survey is made by Gaozhuang Coal Washery of various aspects of the plant′s management system on the basis of the tree—structured fine-management network for effecting improved control and management of 2 major aspects-equipment operation efficiency and associated management system. Targeted study is specifically made on 10 key links for improvement of control and management of shallow-bath heavy-medium deshaling system, and primary heavy medium cyclone separation system, as well as coal quality inspection and checking of product indices. It is aimed to enable all process links to operate under control and make shared contributions to the reduction of the rate of loss of coal in refuse, as well as increase of yield of flotation concentrate and organic efficiency in coal washing operation, so as to yield a favorable socio-economical result.