Abstract: Wrinkling and fracture are easy to occur in the process of hot spinning necking due to uneven deformation.Based on the finite element model, the hot spinning necking process of the 6061 aluminum alloy gas cylinder was simulated by using ABAQUS software,and the model was experimentally verified.According to the results of numerical simulation, a process improvement method for simultaneous heating of internal and external surfaces was proposed.The numerical simulation and experimental results show that the thermal spinning necking process can significantly improve the non-uniformity of the temperature distribution, improve the uniformity of stress and strain distribution, and play the role of grain refinement in the whole thickness direction.