Abstract: A flexible circuit board connector is at least composed of a base, a loose cover, a plurality of terminals, and a plurality of insertion terminals. The base is provided with symmetric grooves which are used to provide for an emplacement of projected shafts of the loose cover, so as to prevent the loose cover from being displaced horizontally. Next, front ends of the plural terminals are pressed into through-holes of loose cover, so as to prevent the loose cover from being dropped off in a vertical direction. Then, through an insertion of the plural insertion terminals, positions of the projected shafts of loose cover are lifted up by abutted parts at front ends of the insertion terminals, so as to position the loose cover. In addition, the abutted part is also provided with an inverted hook, such that the insertion terminal can be tightly emplaced in the hole.