An L-shaped toothbrush comprises a head having a top surface and a bottom surface, a horizontal length of the head being larger than a vertical length of the head, a lower brush formed in a direction perpendicular to the bottom surface of the head, a handle connected to a side surface of a middle portion of the head, bent in an L shape, and extending from the head, the handle integrally formed with the bead, and an upper brush formed on the top surface of the head.