Abstract: An adaptive sequential optimization algorithm was presented based on improved Kriging surrogate model, while a corresponding optimization platform was developed using Matlab software, with which an aerodynamic optimization design was carried out for a centrifugal compressor volute by taking the total pressure loss coefficient as the target variable. A comparative calculation was made for the compressor volute before and after optimization, so as to verify the applicability of the platform in design of actual compressor volutes. Results show that after optimization, the total pressure loss coefficient is decreased and the static recovery coefficient is increased, resulting in improved performance of the compressor volute.