The invention provides geomembrane welding equipment which comprises a support, a heating device, pressing wheels, a fixing wheel, a spring, an adjusting nut, a guiding barrel, and supporting parts thereof. The heating device is fixed on a waist column through a heating device fixing hole and a heating device fixing screw hole, and engineering waterproof materials such as geomembranes can be welded. The pressing wheels are arranged above and below a binding seam face during welding, so that a binding face is even in binding, the pressure of the pressing wheels can be adjusted through adjusting bolts, so that the binding face is very firm, the burning heating device is used, so that a long electric cable of an electric heating device is removed, the whole equipment is compact in structure, small in part number, light and convenient to carry.