The utility model discloses a portable
toothbrush. The
toothbrush comprises a shell and a
brush head, a containing cavity is formed in one end of the shell, the
brush head is movably connected to the shell, the
brush head moves towards the interior or the exterior of the containing cavity by moving the brush head, a containing cavity used for containing
toothpaste is formed in the other end of the shell, and a first connector is arranged at one end of the containing cavity. A
piston is movably embedded in the other end of the containing cavity, and
toothpaste in the containing cavity is squeezed out towards the first connector by moving the
piston. A second connector is arranged at one end of the brush head, an
extrusion opening is formed in the
bristle part of the brush head, and the first connector, the second connector and the
extrusion opening are communicated to form an
extrusion channel; the problem that a traditional
toothbrush is separated from
toothpaste is effectively solved, the toothpaste does not need to be independently used for smearing during use, the
tooth brushing process is simplified, and convenience and rapidness are achieved; the brush head can be contained in the containing cavity of the shell, carrying is convenient, the brush head is prevented from being contaminated by
bacteria and dust, and cleanliness is kept.