Abstract: Land reclamation is an effective measure in recovering land resources，protecting ecological environment and solving the contradiction between people and land.This paper presents ArcEngine，ArcSDE，Oracle，Micirosoft Visual C# and other technologies to develop mining subsided land reclamation system which integrates reclamation suitability evaluation model，ground deformation prediction model，land cube calculation model and economic evaluation model for land reclamation.The system realized the information and network management about mining subsided land，provided the functions such as map handling，ground deformation analysis，land cube calculation，reclamation suitability evaluation and economic evaluation.

Key words: Mining subsided land, Land reclamation, GIS, Evaluation system