The C-type female connector contains at least a C-shaped clamp. The C-shaped clamp contains a base, one or two flexible arm pieces extended from the base's lateral sides toward each other, respectively, thereby forming a C shape. Along a slit between front edges of the arm pieces, each arm piece has a flexible contact section. The C-shaped clamp further contains a plug piece for positioning extended from a bottom edge, and a contact piece for establishing electrical connection extended from a top edge, of the base. The connector is structurally simple, efficient to assemble, more reliable, and has highly improved yield.