The environmental impact assessment system has been improved with the implement of the “Technical Guidelines of Environmental Impact Assessment,Groundwater Environment”( HJ610－2011), and groundwater environment impact assessment has become important. Based on the brief description of groundwater resources of Sichuan ,project classification,the contents of work grade division,environmental status investigation, groundwater environmental protection means in the Technical Guidelines, this paper analyzed the difficulties and problems encountered in the various project of groundwater assessment in Sichuan, and proposed some direction suggestions．