Abstract: In view of the problems of inadequate supervision of reclamation work,inadequate technology and others in the governance of coal mining subsidence area,a model analysis is conducted on the coal mining subsidence area.Land reclamation engineering technology and biochemical measures are adopted,and a decision tree classification model is established by combining ID3 algorithm with fuzzy mathematical membership function evaluation method to evaluate the suitability of land reclamation in the mining area.By using the limit condition method for testing and comparing with the decision tree results,it is found that 93% of the results are consistent,and the decision tree results are more accurate.By calculating the required earthwork volume for land reclamation engineering technology,reducing transportation and manual work costs,improving engineering efficiency,and combining biochemical measures,strategies of adaptation to local condition are proposed,which can significantly improve the adverse effects caused by coal mining subsidence areas in coal mines.