An auto-choke control device maintains good startability at the time of restarting at high temperature without need of a thermostat specific for an auto-choke. An engine temperature detection device is drivably controlled by a control circuit in response to the engine temperature. A switching detection circuit detects ON or OFF operation of a main switch connected to the control circuit. A self-hold circuit automatically holds power to the control circuit when the main switch is changed from an ON state to an OFF state.