A line drawing device for garment fabric cutting comprises a base. Supports are fixedly installed on the upper portions of the left end and the right end of the base, and the upper ends of the two supports are fixedly connected through a transverse plate made of stainless steel; a vertical first electric telescopic rod is fixedly installed in the middle of the upper portion of the base, a transverse material plate is fixedly installed at the upper end of the first electric telescopic rod, and a box is arranged on the upper portion of the material plate; vertical elastic telescopic rods are fixedly installed on the positions, close to the four corners, of the upper end of the box correspondingly, and universal ball heads are installed at the upper ends of the elastic telescopic rods correspondingly; and an electromagnet is fixedly installed in the middle of the top of the box, and the universal ball heads can be in contact fit with the bottom of the transverse plate. Relative to traditional line drawing or cutting equipment controlled by a computer, the line drawing device has the advantages that the structure is simple and small, the manufacturing cost is low, and software matchedwith the computer is simpler.