The invention discloses an electro-hydraulic linking gas valve. The electro-hydraulic linking gas valve comprises a valve housing, a supporting base, a valve seat, a valve plate, a reset spring, a limiting seat, a shell, a hollow piston, a lifting rod and a lifting rod supporting spring. The upper end of the lifting rod extends out of the shell and is fixedly connected to a baffle plate; the hollow piston is arranged through the upper portion of the lifting rod in a sleeving manner and is compressed to a step surface of the lifting rod through the baffle plate; an isolating membrane is arranged between the lower end of the hollow piston and the lifting rod; the lower portion of the lifting rod penetrates through the lifting rod supporting spring and is fixedly connected to a bulb push rod;the bulb of the bulb push rod is connected to the valve plate universally; a plunger hole is formed in the shell, a plunger and a plunger supporting spring are arranged in the plunger hole, the plunger and the plunger hole are matched to form a hydraulic oil plunger cavity, the hydraulic oil plunger cavity communicates to the port A of an electromagnetic reversing valve on the side surface of theshell, the ports P and T of the electromagnetic reversing valve separately communicate to oil paths P and T of the shell, and the upper end of the plunger leans against the baffle plate. The gas valve can improve the sealing reliability, and meanwhile, the cost is lowered.