The profile accuracy and surface integrity of blades directly restrict the performance and service life of the aero-engine. Because of the characteristics of thin-wall deformation and difficult material processing and flexible contact, it is difficult to achieve a precision grinding. Therefore, a self-adaptive abrasive belt grinding method based on the integration of defection and machining was proposed. Firstly, according to the characteristics of the blade structure, the edge grinding and round angle grinding devices were designed, which were used to grinding the blade surface and LTE(the leading and the trailing edges), the damping table and the root corner. Secondly, self-adaptive software was developed based on geometric error of model reconstruction. Finally, the blade grinding test was carried out through the double position integrated seven axis CNC grinding center. The results show that the surface roughness of the blade is less than 0.4μm, the machining error is kept within the range of 0.05mm, and the grinding period is only 3.5h, which satisfies the processing requirements of the blade. Therefore, the self-adaptive abrasive belt grinding technology is an effective method for precision grinding of blades.