The traditional method of verifying mechanical and electrical products shock strength is primarily through impact test to the product. From the current experiment the force size and amount of structural deformation can’t be gotten when it suffers from the impact load. Applying the software of MSC.Patran and MSC.Dytran, finite element is modeled for the mechanical and electrical products components, and impact property is analyzed when they are subject to impact load. It can reduce the number of verification test and improve design quality. The application is very promising.