The gas valve assembly line of the invention relates to an industrial assembly line for gas valve assembly. Its purpose is to provide a fully automatic valve assembly line capable of improving the assembly efficiency of gas valves and promoting large-scale production. The gas valve assembly line of the present invention includes a frame, on which a main slideway is arranged, and an assembly main line is installed on the frame, and an accompanying fixture capable of moving in the horizontal direction is arranged on the assembly main line, and the accompanying fixture is used to fix the valve body of the valve , the following stations are set in sequence on the main assembly line: the front material loading station of the valve body, the body vacuum station, the oiling station of the closed sub-direction, the rotary station of the closed sub-oiling oiling, and the assembly station of the cork identification And small screw lock station, large screw lock station, short copper joint lock station, long copper joint lock station, solenoid valve assembly lock station, fine-tuning spool assembly lock station, valve core Component assembly station, switch shaft assembly assembly station, cover plate assembly locking station and finished product unloading station.