In order to ensure that the recharge water in the foundation pit dewatering project meets the water quality requirements of the spring groundwater system in Jinan, an integrated dewatering and recharge apparatus for foundation pit projects has been developed. The apparatus consists of two parts: recharge engine and water collection tank. The main components are water pump, filter, pressurizing tank, electronic control system, water collection tank and recharge well tubing. The working principle and technical characteristics of the recharge apparatus are introduced. Through the successful application in the foundation pit dewatering project of Dayangzhuang Station on Line R1 of Jinan Rail Transit, the integrated dewatering and recharge apparatus for the foundation pit project has achieved good environmental and social benefits.