To provide the cleaning tool of teeth capable of brushing upper and lower parts of the same surface of the teeth without shifting it from one hand to the other by parallelly abutting a toothbrush to a tooth row and switching the rotation lever at hand further especially at the time of brushing the back side of the teeth without widening lips more than needed by a crank shape.

A main body is largely divided into three parts. The center part is divided into a body part 2, a neck part 3 and a shaft part 4 and respective nodes are bent to about 135 degrees. A holding part 1 and a head part 5 are provided on both ends without being fixed. A rotatable shaft center 7 or the like is incorporated in a hollow from the holding part 1 to the head part 5 and both ends of the shaft center 7 or the like are fixed to the holding part 1 and the head part 5. Controllers 10 and 11 rotatable only within 90 degrees are provided on the contact surfaces among the holding part 1 and the body part 2 and the shaft part 4 and the head part 5. By operating the rotation lever to left and right, the head part 2, the neck part 3 and the shaft part 4 are rotated by 90 degrees to the holding part 1 and the head part 5 is rotated inversely by 90 degrees to the contrary. Thus, the bristle tips of a brush 6 are turned to the same direction at all times.