The invention discloses an environment-friendly galvanized full-automatic gantry barrel plating production line. The environment-friendly galvanized full-automatic gantry barrel plating production line comprises a portal frame, a galvanized roller, a connecting frame, a connecting rod, a connecting column, a pushing hydraulic oil cylinder, nozzles, guide pipes, connecting pins, an adjusting hydraulic oil cylinder, a fixing plate, a connecting pipe, a water storage tank, a water pipe and a water pump, wherein the galvanized roller is arranged in the portal frame, the connecting frame is installed above the galvanized roller, the connecting rod is installed above the connecting frame, the connecting column is installed above the connecting rod, the pushing hydraulic oil cylinder is arrangedin the connecting column, the nozzles are installed on the left side and the right side of the connecting frame, the guide pipes are installed above the nozzles, and the connecting pins penetrate through the upper portions of the guide pipes. According to the environment-friendly galvanized full-automatic gantry barrel plating production line, water flow is jetted out through the nozzles, the galvanized roller can be effectively cleaned through the water flow, and the situation that the raw material is adsorbed to the surface of the galvanized roller, and consequently the reuse effect of the galvanized roller is affected is avoided.