An electrical connector and a conductive assembly thereof are disclosed. The electrical connector includes an insulating body disposed with a plurality of receiving spaces, a first conductor correspondingly received in a receiving space and one end of the first conductor is hollowed out to form a receiving cavity, a liquid conductor stored in the receiving cavity, a second conductor, and a compressive elastic member. The second conductor having a main body that part thereof exposes outside of the receiving cavity, a guiding connection part extended from one end of the main body and located in the receiving cavity, and a stopper disposed between the main body and the guiding connection part. The compressive elastic member is arranged between the stopper and the bottom of the receiving cavity while the maximum compression distance of the compressive elastic member is larger than the distance between the rear end of the guiding connection part and the liquid conductor. Compared with the prior art, the conductive assembly and the electrical connector with the conductive assembly provide stable electrical connection.