Gas valve control device and gas water heater

The invention discloses a gas valve control device and a gas water heater. The gas valve control device comprises a power supply circuit, an MCU group and a gas valve control loop; the output end of the power supply circuit is connected with the power supply end of the MCU group, and the output end of the MCU group is electrically connected with the gas valve control loop; the gas valve control loop comprises a main gas valve, a secondary gas valve and a switch group, the main gas valve and the secondary gas valve are connected in parallel, and each switch in the switch group is connected to a main circuit of the gas valve control loop in series; the switch group comprises at least three switches, and each switch is controlled by one MCU in the MCU group; and each MCU is used for controlling the corresponding switch in the switch group to be switched off when receiving an abnormal signal of the gas water heater so as to control the main gas valve and the secondary gas valve to be switched off. According to th