Abstract: The singlevehicle mobile 60Co container inspection system(CIS) is developed. The singlevehicle CIS assembles all devices on one truck. Objectcontainer is still while inspection vehicle moving with gantry surround it, and the inspection is completed. The singlevehicle CIS has advantages of briefness and flexibility. Its contrast indicator(CI)and image quality indicator(IQI) for 100 mm steel plate attain to 1.0% and 4.0% respectively and steel penetration(SP) is about 210 mm. Maximum dose per scanning is about 5 μGy, scanning speed varies from 6 to 18 m/min, maximum speed of transportation is 90 km/h.