The invention discloses a rope winder for an electric shutter. The rope winder for the electric shutter comprises a support and a rotary shaft rotationally arranged on the support, wherein a winding rope opening is formed in the support; a plug head is connected to one end of the rotary shaft, and a slide ring is arranged on the rotary shaft; and a notch used for fixing the tail end of a winding rope is formed in the slide ring. According to the rope winder for the electric shutter, due to arrangement of the slide ring, the position of the slide ring can be correspondingly adjusted according to the size of the shutter; the tail end of the winding rope is fixed, thus reducing the wear degree of the rope; and the rope winder for the electric shutter is simple in structure and easy to realize.