For the coal-storing pit surrounded by extremely complex environments, the design scheme is related to the normal production, safety and late maintenance works. In order to improve the supporting effect and avoid repeated maintenance, combined support with original supporting by the 8th Coal Mine of Pingdingshan, pile-anchor, soil-nailed meshing-concrete spraying and pre-stressed soil-nailing reinforcement was adopted with good effect. Based on the observation by information-construction method, the horizontal displacement of foundation pit and the settlement of the surrounding buildings are in a safe range, the safety of the foundation pit and the surrounding buildings were ensured.