7055 aluminum alloy combines the high strength of steel with the low density of titanium alloy and also has good corrosion resistance, and the cost is much lower than that of titanium alloy, so it can be widely applied in the manufacturing field of solid rocket engines. Therefore, by analyzing the influences of blank properties, material spinability and temperature on the machanical properties of 7055 high-strength aluminum alloy, a reasonable process test plan was formulated to study the spinning forming accuracy and defect control methods of the material. Then, by carrying out multi-pass spinning tests on 7055 high-strength aluminum alloy, the influences of spinning temperature on forming defects and the influences of spinning wheel forming angle and feeding ratio on forming accuracy of workpiece were obtained, and the process parameters were determined when the spinning accuracy was optimal with the temperature range of 90-110 ℃, the fillet radius of rotary wheel of 6 mm and the feeding ratio of 0.40-0.45. Furthermore, the multi-pass and large-thinning spinning of 7055 high-strength aluminum alloy cylindrical parts with the wall thickness from 8.0 mm to 1.6 mm was achieved, laying the foundation for the material to be used in spinning of solid rocket engine casings.