The subject innovation will be, the subject innovation is coupled to assemble and disassemble the toothbrush body 110, one side of the brush body part (120a) of the exchange and a portable toothbrush for use by comprising a housing to be portable and exchange bristle and that is configured to be stored in the above-described toothbrush body 110, the body part (120a) of the toothbrush 100, and may exchange the spent brush head 111, when the cell in case the toothbrush the toothbrush body part (120a ) into the receiving space (receiving portion) is provided in a cell to a sanitary manner. This devise is when it is possible to exchange the spent brush by providing ease of replacement and mobile bristles at the same time can reduce the generation of municipal waste, and to reduce the cost of a toothbrush to buy, and outdoor or travel toothbrush It offers all the advantages a portable, easy.