Abstract: A plug valve for a gas stove, consisting at least of a natural-gas nozzle, a propane-gas nozzle, a valve body, a cock, an adjusting rod, an O-shaped ring, a stop ring, a spring, a stop plate, a cover, a pair of screws, and a valve rod. The adjusting rod, the O-shaped ring, and the stop ring are disposed in the cock, the cock, the spring, the stop plate, the cover, and the valve rod are disposed in the valve body via the screws, the natural-gas nozzle or the propane-gas nozzle is disposed in the valve body. Switching between natural gas and propane gas, flow adjustment thereof are convenient, and no special tool is required, which make the invention suitable for a wide range of users. The plug of he invention is safe and reliable.