After the verification and analysis of the shrinkage defects on the surface of the body electrophoretic paint film at the production site,the main reasons for the shrinkage of the electrophoretic paint film were found out,and the quality problem of the electrophoretic shrinkage was successfully solved,the tissue memory was formed and the FMEA library was updated,which provided preventive measures for the occurrence of electrophoretic paint film defects at the subsequent painting production site.