Emergy theory and analysis method were employed to compare the effects of pre-and post-reclamation of coal mining subsidence on emergy inputs and outputs of agricultural-ecosystem.The results showed that after reclamation,the total emergy input and output were 2.7 times and 3.1 times of those before reclamation,respectively.Reclamation significantly increased the rate of emergy input(defined as[renewable organic energy+unrenewable source production]/[renewable environmental resource+nonrenewable environmental resource]),which was 7.4 times of that before reclamation,indicating reclamation promoted local economic development of agricultural ecosystem.Emergy consumption per capita increased by 2.7 folds,suggesting improved living levels of local residents. Diversification of the developing agricultural structure decreased the yield ratio of net emergy after reclamation.Accordingly,an increase was observed for environmental loading ratio from 0.5 to 3.7,and for system stability indices from O.lto 0.36,suggesting reclamation of coal mining subsidence may improve the cyclic utilization efficiency and sustainability of agricultural ecosystem.