The invention discloses a three-degree-of-freedom curved surface self-adaption intelligent force-controlled flexible grinding and polishing end executive device. The three-degree-of-freedom curved surface self-adaption intelligent force-controlled flexible grinding and polishing end executive device comprises a two-dimensional attitude adjusting assembly, a linear servo force-controlled assembly,a grinding and polishing assembly and a controller. The linear servo force-controlled assembly realizes real-time control and feedback of grinding contact force by closed-loop control of contact forceto ensure constant contact force machining. The two-dimensional attitude adjusting assembly realizes the real-time adjustment of the grinding disc attitude by closed-loop control, so that the grinding surface always coincides with the local tangent plane of the curved surface to realize the curved surface self-adaption, the problems of uneven grinding, over-grinding and the like are effectively prevented, and the robot self-adaption flexible grinding and polishing machining is achieved. According to the three-degree-of-freedom curved surface self-adaption intelligent force-controlled flexiblegrinding and polishing end executive device, the grinding disc always do centering movement when the attitude is adjusted, so that unnecessary displacement can not be produced when the grinding discadapts to the change of the curved surface, repeated grinding and polishing on the polished area is effectively prevented, the uniformity and consistency required by the grinding and polishing processare ensured, and the three-degree-of-freedom curved surface self-adaption intelligent force-controlled flexible grinding and polishing end executive device is suitable for the self-adaption high-precision grinding and polishing of large free curved surface parts, especially large wind turbine blades.