Contamination of ground water has become a global problem because of the leakage of oil tanks in gas stations. Through the investigation of the present situation of the groundwater and soil characteristics of the groundwater and soil in a gas station in North china. The results showed that the pollution of the shallow groundwater and soil in the gas station was caused by the contamination of the air through the aeration zone. Shallow groundwater pollution are mainly distributed in the gas station in the field; range of soil pollution is mainly distributed in the relief center point as the center of a circle of 5.0m and the radius of the circle and extends downward column range of about 15m. According to the risk assessment of groundwater and soil pollution in the survey area, the shallow groundwater and soil in the area are beyond the upper limit of human health risk level.