1. An electrical connector, which is used to correspondingly mate with another mating connector, comprising:an insulating body which comprises a housing and a tongue extending forwardly out from the housing;
a plurality of conductive terminals, each conductive terminal having a mating portion exposed on the tongue and a soldering portion extending backwardly out from the housing;
wherein the electrical connector further comprising:
a metal inner shell which surrounds to form a first frame, the first frame being fixed on the insulating body and surrounding a rear portion of the tongue to form a mating cavity;
a metal outer shell which surrounds to form a second frame, the second frame encircling an outside of the first frame, the metal outer shell being electrically connected with the metal inner shell together, a plurality of soldering legs extending out from two sides of the metal outer shell; and
an insulating outer shell which is engaged with the metal outer shell integrally, a rear portion of the insulating outer shell being formed with a receiving cavity;
wherein the metal inner shell being correspondingly inserted in the receiving cavity, the insulating outer shell surrounding a front portion of the tongue and forming an insertion opening, the insertion opening being integrally communicated with the mating cavity along a front-rear direction.