Abstract: The main cause of soil mass deformation and subsidence derives from the drawdown by continuous over exploitation of deep groundwater, which has made a combined depression cone with adjacent cities base on studies on the seepage deformation of clayey soil. The paper takes HeBei Province as an example to show that the overexploitation of deep groundwater may cause issues of subsidence and ground fissures. These disasters are developing and producing a severity impact for people daily life. The effective measures should be considered that the local government takes action to control the exploitation of deep groundwater within an allowable extent. This is the key measure to prevent geological environment hazards.