Abstract: Nuclear radiation monitoring vehicle is an important part of nuclear emergency work. A nuclear radiation environment monitoring vehicle is designed, which integrates the detector and the vehicle as a whole to detect the radiation environment around large nuclear facilities quickly and flexibly. This study is based on the existing vehicle installation of multiple independent working detectors, access to the vehicle network through CAN bus,modify the current vehicle multimedia system software to complete the functions: real-time data collection, spectrum display, automatic peak finding, nuclide identification, radiation intensity distribution map, etc. The experimental results show that the system can run stably,display the real-time spectrum diagram, and draw the driving track and radiation intensity distribution diagram. This design can be used for radiation mobile inspection, environmental radiation monitoring and other fields.