An electrical connector includes: an insulating base with a perforation; an insulating cover with a through hole and two slots recessed from a top surface, covered on and capable of sliding relative to the insulating base; a thrust member, disposed on the top surface of the insulating cover, has a body accommodated in the through hole, the body comprises an axial pushing hole, a plate portion respectively extending from two sides of the body and accommodated in the corresponding recessed slots; and a cam, having a driving portion above the body and a shaft extending downwards from the driving portion, at least one interference portion projects from a periphery at a lower end of the shaft and fixed near a bottom of the insulating base, the shaft passes through the axial pushing hole and the perforation.