The utility model discloses a spreader for producing a double-side adhesive tape of a glass curtain wall. The spreader comprises a bracket, a work bench, an induction system, a coating device, and clamping devices, wherein the work bench is arranged on the bracket through a roller in a rolling manner; the induction system is used for controlling the work bench to slide; the coating device is arranged above the work bench, and the clamping devices are arranged at two sides of the work bench. By adopting the spreader, the automatic level of the production process of the double-side adhesive tape of the glass curtain wall can be improved; the labor force is released from a bad production environment; consumption of raw materials is reduced, and the stable uniformity of the product quality is ensured.