The invention relates to the technical field of manipulators, in particular to an accurate control system and control device for a manipulator. A grabbing cavity is formed in the end of a mechanical arm, push rods are symmetrically installed in the grabbing cavity, clamping plates are connected to the other ends of the push rods, air bags are installed on the sides, close to each other, of the clamping plates, sensors are arranged at the symmetrical positions of the two air bags correspondingly, sliding cavities are connected to the bottom end of the grabbing cavity, baffles are slidably connected into the sliding cavities, springs are connected between the baffle and the inner ends of the sliding cavities, and the air bags are connected with the corresponding inner ends of the sliding cavities through air pipes. The situation that a stator falls off between the two clamping plates and is damaged can be reduced, meanwhile, the arranged sensors can facilitate workers to effectively master the working state of the mechanical arm, the movement track of the mechanical arm is adjusted when needed, convenience and rapidness are achieved, and meanwhile the turnover quality of the mechanical arm for the stator is improved.