Abstract: To overcome the shortcomings of traditional finite element-boundary integral(FEBI) method in analyzing thin coating conductor that expensive computer storage space is needed for plenty of unknowns using tetrahedral elements, a hybrid shell vector element-boundary integral method is developed. The method can reduce the number of unknowns greatly, further simplify the computation of mass matrix in finite element method(FEM) through transforming volume integral into surface integral. The method is also employed for analyzing radar cross section with different thickness and materials of thin coating, which proves its accuracy and advantages in reducing the unknowns and storage and saving computational time.