A card connector includes a body, multiple terminals accommodated and positioned in the body, a housing covering the body, and a containing space is defined by the housing and the body and extending along a length direction of the body, a card holder with a cooperating portion positioned in the containing space, and the card holder is capable of moving forward and backward in the containing space, and an adjusting element located at the front of the card connector, including a positioning portion arranged for positioning the adjusting element to the card connector, an actuating portion corresponding with the cooperating portion, and an operation portion. When the operation portion is driven, the actuating portion actuates the cooperating portion, thereby the card holder exiting from the containing space. The structure is simple, and takes up less space, which improves miniaturization progress of the card connector.