The present invention generally relates to a bills-only sterilizer capable of sterilizing a little bills, and more particularly, to a bills-only sterilizer that can cause the bills under sterilization to be spaced more efficiently and enhance the efficiency of sterilization maximally. The bills-only sterilizer comprises a door opened and closed to insert bills into main body case and pull bills out of the main body case, a sterilizing chamber for sterilizing bills, the sterilizing chamber including a holding means and a sterilizing means, the holding means capable of holding bills therein when the door is opened, a blowing means under the sterilizing chamber, the blooding means blowing wind upwards, thereby causing bills to be spaced, an exhausting means formed back face of the main body case, the exhausting means connected to the sterilizing chamber and the exhausting means going through to the outside of the main body case.
