The invention discloses a water-resistant garment fabric printing device which comprises a rack, a display terminal, a controller and a printing mechanism. The display terminal and the controller arearranged on the rack, and the printing mechanism is arranged in the rack. An air cylinder is arranged on one side of the top of the printing mechanism, and a conveying mechanism is arranged below theprinting mechanism. A drying cylinder is arranged at the position, located in front of the conveying mechanism, in the rack. According to the device, when printed gold stamping fabric penetrates through the interior of the drying cylinder, hot air flow generated by an air heater dries printing ink marks, quick drying of ink is achieved, the printed fabric can be conveniently rolled in time, meanwhile, gas in the drying cylinder enters a purification box under the action of an induced draft fan, an activated carbon adsorption core firstly adsorbs and filters particulate matter in waste gas, then pollutants in the waste gas are in contact reaction with cleaning liquid for secondary purification, and the purified gas is exhausted through an exhaust pipe, so that the emission diffusion of thepolluted gas is greatly reduced, and the environmental protection property of the fabric printing device is favorably improved.