The utilization hour of coal power unit is one of the important indexes to measure the power supply and demand situation of a region and the utilization degree of coal power equipment. In this paper，the main factors that affect coal power utilization hour，such as power demand，power structure and power structure，are the starting point. The main factors affecting coal use hours as the breakthrough point，from the historical development trend，transverse typical provinces comparative dimension of Henan coal utilization hours of system analysis，and combined with green，low carbon energy development situation，based on the role of gradual changes in the structure of the power supply of coal，coal utilization hours of Henan province in the future the forecast.