In order to improve the anti-corrosion performance of cold-rolled plate in vehicle accelerated corrosion road test,the effects of different electrophoretic paint and phosphating materials on the anti-corrosion properties of cold-rolled sheet were compared through in-depth study.It was found that increasing the content of free F-in phosphating tank could effectively improve the anti-corrosion performance of cold-rolled plate,which was improved by 150%.This could provide a more abundant proof for the use of cold-rolled plate in new models in the future.