To provide an auto-choke device of a general-purpose internal combustion engine preventing wet fouling by inhibiting fuel injection when a recoil starter is operated in a state where ignition does not occur.

It is judged whether ignition is made practicable through operation of a combination switch by an operator (whether the combination switch is operated to an on-position) (S18) and an opening of a choke valve is adjusted by controlling movement of an electric motor for choke based on the judgment result. Specifically, when the ignition is judged not to be made practicable (the combination switch is in an off-position), a choke-valve full open instruction is outputted and the movement of the electric motor for choke is controlled so that the choke valve is fully opened (S30).