For the problems of time-consuming, waste material and poor product quality stability in open forging and machining production methods, the closed forging forming technology was proposed for automobile disc parts. Firstly, according to the structural characteristics of part, the forming scheme was determined, and three kinds of pre-forgings structures were designed. Secondly, the high temperature rheological stress model and finite element analysis model of material were established by software Deform-3D, and the forming processes of disc body parts under three different schemes were numerically simulated. Then, the forming results of parts were analyzed, and the maximum forming forces and die wears between the pre-forging process and the final forging process were compared. Finally, the closed forging die structure was designed according to the best scheme, and the actual forging test was carried out. The results show that the process is reliable, the die structure is stable, there is no abnormal noise, and the demolding is smooth. The obtained automobile disc body parts are well formed, and there are no defects such as insufficient filling and scratches. The size and quality meet the requirements, which reduces the production cost for the enterprises.