Abstract: To better improve and restore the ecological environment damaged by mining of Chaoguo open pit mine，a dynamic reclamation mode is proposed based on natural conditions，mining technique conditions and ecological damage prediction of the mining area.The dynamic reclamation mode makes the reclamation work dynamically throughout the entire process of mining project.Reclamation planning，dynamic reclamation advance and comprehensive reclamation work of stope，dump，transport roads and industrial site are respectively carried out at different stages of design，construction and production and closure of mining.Reclamation effect evaluation and supplementary reclamation will be made after the end of initial stage of reclamation.Especially during the stripping and mining in stope，spray seeding technique and the soil covering planting method are applied for dynamic reclamation of stope steps，making the stope reclamation and mining work synchronously.Aimed at the existing problems in the reclamation of mine area，the dynamic reclamation mode and the mining afterwards reclamation mode are separately used and compared in the area reclamation.The results show that the former can complete the reclamation earlier with better effect，so it′s suggested that the mining area be restored by taking the dynamic reclamation mode from now on.

Key words: Open pit mine, Dynamic reclamation mode, Spray seeding technique, Mining afterwards reclamation mode