In order to improve the accuracy of data processing, a staged registration method was proposed. First, the defective blades were divided into four parts, and the self-registration algorithm was used to register each part; then the improved complete registration algorithm was used for the global registration of the adjacent two parts. The experimental results show that compared with the traditional algorithm, the registration time can be shorten to less than 1 s under the premise that the registration error is less than 0.005 mm by using the self-registration algorithm; the complete registration is faster than the traditional algorithm. The measurement error of the system is less than 0.010 mm by measuring the 0-level standard gauge block, which meets the accuracy precision requirements of blade measurement. The staged registration method has certain application value for the measurement of aviation blades.