Turbine spherical shell is a key component of liquid rocket launching power，which affects the success or failure of rocket launch.However，the performance of the turbine spherical shell produced by the traditional free forging process has not been able to meet the design requirements.Based on the use of die forging process to form the turbine spherical shell in this paper， by simulating the microstructure of GH4061 and the forming process of the turbine spherical shell，the optimal forming temperature and critical deformation parameter law of GH4061 alloy， the forming process of the turbine spherical shell and strain distribution characteristics are systematically studied.The results show that the optimal forming temperature of GH4061 alloy is 1 000 ℃，and the optimal deformation is 20% to 40%. the turbine spherical shell is produced by die forging process.The blank is completely filled in the die without defects，the end face is flat，the flash is exenly distributed，and the size and performance meet the requirements of forgings.The position with the least amount of deformation during the forming process is on the lower end surface of the turbine shell，and the grain size is ASTM 5 to 6.