An anti-deformation mechanism for an axial rod motor comprising a base, two vertical fixing seats, two axial fixing seats, two axial screws, a stator and a mover arranged on the stator. The two vertical fixing seats are arranged on the base to support the stator vertically. The two axial fixing seats are arranged on the base and located outside the two vertical fixing seats. Each of the two axial fixing seats is provided with a fixing through hole for insertion of the axial screw. The stator is an elongated cylindrical rod and provided with an axial screw hole at each of two ends thereof to be screwed with the axial screws. Both ends of the stator are fixed by the vertical fixing seats and the axial screws, and synchronously, the two axial screws apply pull forces to the stator to prevent the bending deformation of the stator.