Spinning temperature, friction coefficient and spindle speed are the main parameters that affect the hot spinning process of accumulator shell. Therefore, the neckspinning process of the accumulator shell was simulated by ABAQUS, and several simulation experiments were designed and simulated by the central composite method. Then, the simulation process was conducted to analyze the influences of process parameters on the neckspinning result, and the mapping relationship between process parameters and optimization variables was established by the secondorder response surface method. Furthermore, the mapping relationship was input into Design Gateway, and the multiobjective optimization was realized by NSGAII algorithm to obtain the Pareto optimal solution so as to achieve the purpose of optimizing process parameters, reducing energy loss and improving the shell quality. The experiments results show that the bottle diameter error between simulation and actual processing is 5.45%, and the maximum thickness error is 3.99%, which is within the allowable range. Thus, the spinning temperature is reduced by 30 ℃ achieveing the purpost of reducing energy loss, and the speed of spinning wheel is increased from the original 150 r·min-1 to 200 r·min-1 to increase the production efficiency by nearly 20%.