The utility model relates to a card edge connector and a combination thereof. The card edge connector comprises a lengthwise insulating body, conductive terminals accommodated in the insulating body and a card withdrawing mechanism pivoted on the insulating body, wherein the insulating body is provided with a front end face, a rear end face, an upper end face and a lower end face, the front end face and the rear end face are opposite to each other, the upper end face and the lower end face are opposite to each other, the insulating body is provided with a central slot from the front end face in a concave mode, at least one end of the central slot is provided with a tower-shaped portion used for accommodating the card withdrawing mechanism, each conductive terminal comprises fixing portions fixed in the insulating body, contact portions extending into the central slot from the fixing portions and welding tail portions extending out of the rear end face of the insulating body from the fixing portions, the rear end face of the insulating body is provided with a plurality of fastening grooves used for fastening the fixing portions, and the lower end face of the insulating body penetrates through the rear end face and forms a plurality of grooves which correspond to the fastening grooves and are communicated with the fastening grooves. The combination is provided with a positioning fixture, wherein the positioning fixture comprises a main body portion and a plurality of convex block portions, and the convex block portions extend from the main body portion and are pressed against the grooves so as to enable the conductive terminals to keep stable.