The surface contact impression(SCI) seriously affects surface quality of stamping parts. Relational model of alleviating SCI including die radius , punch radius, clearance and friction coefficient are received. According to the model and forming prosesses, five factors which each chooses four levels are designed and L16（45）orthogonal table is constituted. The experimental and analyzed results indicate that the superior parameter affecting SCI is Rd ,the inferior is holdblanker force. The significance sequences of technology parameters affecting SCI are factor A, E, C ,B and D. These will offer technical supports for surface quality control of panels forming.