A gas-electric hybrid storage water heater includes a water tank, a casing, a combustion chamber, a gas control valve and an electric heating tube. The water tank is provided with a water inlet and a water outlet. The casing is arranged at an end of the water tank, and the combustion chamber is arranged in the water tank. The combustion chamber has a closed end and an open end arranged in the casing. The gas control valve is arranged in the casing, and is connected to a gas inlet pipe and a burner. The burner is configured to extend into the combustion chamber, and a side of the burner is provided with an ignition device. The electric heating tube is inserted into the water tank, and is arranged side by side with the combustion chamber.