The invention discloses a portable brush, and relates to the technical field of a brush. The portable brush comprises a first brush handle and a second brush handle, wherein the opposite one side edges of the first brush handle and the second brush handle are movably connected through a hinge; opposite one side surfaces of the first brush handle and the second brush handle are respectively provided with a first insertion element and a first insertion groove; the front sides of the first brush handle and the second brush handle are provided with brush hair holes; a first support rod is arrangedon the top of the front side of the first brush handle; a first groove is formed in the bottom of the front side of the first brush handle; a second groove is formed in a position, opposite to the first support rod, of the front side of the second brush handle; a second support rod is arranged in a position, opposite to the first groove, of the front side of the second brush handle. The portablebrush has the advantages that the installed first support rod can push the fixed plate to drive the brush hair to enter the inside of the first brush handle; the simple and easy folding effect is achieved; the problem that the brush cannot be easily carried is solved.