Electrical connector plug

The present invention provides an electrical connector plug configured to connect with an electrical connecter socket, comprising a metal housing and a connecting terminal. The electrical connector plug comprises: an insulation main body with a long direction, consisting of a substrate part and an erection part; elastic connection terminals symmetrically pivoted along the long direction and respectively arranged, consisting of a horizontal segment arranged at the substrate part of the insulation main body, a bulged contact segment folded and extended by the horizontal segment and a connection terminal configured to allow the bulged contact segment to be pressed against and connected with the electrical connector socket; a high frequency signal terminal configured to transmit high frequency signals; an electric conduction effect sheet arranged at the erection part, consisting of a front side segment of the substrate part and an impedance drop segment which has the front side segment used for facing the substrate part to extend and shield the high frequency signal terminals to allow the high frequency signal terminal to reduce the transmission impedance; and a shielding casing arranged on the substrate part and electrically contacted with the metal housing.