To improve the material utilization rate and reduce the equipment, materials and production cost, for the skylight frame and skylight connection beam of a car, the nesting forming process was adapted considering the characteristics of part modeling. Then,the nesting forming processes of two sets of parts were simulated dynamically based on the finite element platform, and the processes were optimized. The study shows that the material utilization rate is increased from 40.11% to 45.06% by using the waste area of frame parts as the process supplement, and the costs of materials are reduced. Furthermore, the die development of OP10 process is deleted, and the number of stamping steps is reduced. The test shows that the product quality is good without crack, and the precision of parts meets standard requirements. Thus, this process provides basis for mass production of stamping parts.