To provide a toothbrush which uniformly touches on teeth and effectively brush teeth and whose head is correctly positioned during brushing.

A plurality of support points 6-a, 6-b are equipped on the connection part 6 of the neck part 13 of the shank 3 connected to the brush head 4 so that the brush head 4 can be moved in the face direction 2 similar to the brush bristle planting face 1. The structure is made easily bendable using elasticity of the member. The shank 3 is divided into two parts 3-a, 3-b to make the shank 3 by combining a plurality of rod shapes and the shapes can be mutually slid or fixed. Dislocation of the shank 3 by mutual sliding can be converted to a tilt 17 of the brush head to enable the tilt 17 to be changed to a correct angle by simple one hand operation during tooth brushing.