Abstract: This invention relates to a hair braider and its auxiliary device, which are portable and braids three bunches of hair into a strand. The hair braider has a substantially figure ‘8’-configured cam track allowing three carriers to move along the cam track for a ‘8’ track motion. Three carriers combined detachably with three grabbing members accommodating three bunches of hair therein travels along the cam track as a couple of rotors rotate in opposite direction. While three hair grabbing member held on the holders of the carriers conduct the figure ‘8’ motion, three bunches of hair in three hair grabbing members are braided into one strand.