To solve the problem that a tooth cleaning tool only rubbing a polishing member onto a tooth surface cannot efficiently clean (rub off) strong dirt adhering to the tooth surface.

A tooth cleaning tool includes a polishing member 2 attached to the tip part of a head part 13 of a tool body case 1, and capable of removing dirt on a tooth surface Ta by rubbing on the tooth surface Ta. An electrode bar 5 is provided within the polishing member 2 in a state in which a tip part 5a of the electrode bar 5 is exposed from a tip end surface 2a of the polishing member 2, and an electrode terminal 34 of a negative electrode for a direct current is connected to the electrode bar 5, while an electrode terminal 35 of a positive electrode for a direct current is connected to an earth plate 4 provided on an outer surface proper place of the tool body case 1. This allows the dirt on the tooth surface Ta to be efficiently removed by both actions to the dirt on the tooth surface Ta, including a mechanical releasing action by rubbing of the tip end surface 2a of the polishing member, and an electrical decomposition action by negative ions continuously discharged from the electrode bar 5.