Electronic card connector and card holder thereof

The utility model discloses an electronic card connector and a card holder thereof. The electronic card connector comprises an insulated body and multiple conductive terminals fixed to the insulated body. The insulated body comprises a plugging chamber and a bottom wall on a side of the plugging chamber. The conductive terminals are arranged on the bottom wall of the insulated body and comprise multiple first conductive terminals on the rear side of the plugging chamber and multiple second conductive terminals on the front side of the plugging chamber and close to an insert port side. At least six first conductive terminals and at least six second conductive terminals are provided and are arranged in two rows along the inserting direction and left-right direction. The terminals in the left row of the first conductive terminals along the inserting direction and the terminals in the right row of the second conductive terminal along the direction opposite to the inserting direction transmit same signals. The electronic card connector is provided with electronic cards inserted along opposite directions. Thus, the size of the electronic card connector is greatly decreased; the electronic card connector is miniaturized, and space, on an electronic device, occupied by the electronic card connector is reduced.