In order to obtain complex car body painting design schemes such as photographic photos,artistic patterns,and personalized styles,UV ink printing technology is applied to the car body painting process.UV ink printing is used to replace the base-coat process in the car body painting process.The new painting process is ED and drying,primer-coat spraying and drying,UV ink printing,clear-coat spraying and drying.Base on the new paint process,the paint templates were made and tested.According to the test results,the UV ink printing film thickness is about 135〜150μm,and the overall film thickness is 200〜240 μm;the UV ink printing gloss is 19.6%at 60°and 2.3%at 20°,the overall film gloss is 97.9%at 60°,88.9%at 20°;UV ink printing film adhesion and overall film adhesion are both level 0.The overall paint film has no abnormality after 1000 hours of salt spray test,and has no unusual after 672 hours of temperature resistance,the gloss retention rate is 88.6%.