A connector socket comprises a shielding shell, an insulating body and two baffles disposed on two opposite sides of the insulating body, and further comprises two rows of contact terminals and a spacer all embedded into the insulating body, the insulating body comprises a base and a tongue plate connected to a front end of the base, the two rows of contact terminals are exposed from two opposite sides of the tongue plate, respectively, the two baffles are disposed to correspond to the sides where the two rows of contact terminals are located, respectively; the spacer is located between the two rows of contact terminals so as to isolate the two rows of contact terminals from one another; a plurality of positioning holes for reinforcing the firmness of connection between the spacer and the insulating body are formed on the spacer.