To provide a solenoid valve driving device of an internal combustion engine for reducing adaptive manhours with the simple constitution, and capable of executing accurate valve seating control.

Current pattern of a drawing 2 is for controlling a lift quantity of a valve. First of all, a current quantity to a solenoid is controlled in a first prescribed position according to the lift quantity of the valve. The first prescribed position is preferable in a position having the most influence on a seating way of the valve as compared with the other position. For example, about 1 mm is preferable. As a second prescribed position, for example, the current OFF timing is controlled in about 0.5 mm. As a third prescribed value, for example, the current On timing is controlled again in about 0.2 mm, and as a fourth prescribed position, for example, the current quantity is controlled in about 0.1 mm. Thus, since adaptive control is executed at several points, accurate valve control can be executed with the simple constitution.