A latch structure for a tail gate comprises a housing having an opening groove; a catch having a locking groove disposed in the housing; a pole rotatably mounted on the housing that restricts the rotation of the catch when a protruding portion thereof enters the locking groove; a rail fixed to the housing and having a sliding groove; a link arm having a first end rotatably coupled to the catch, and a second end mounted to be movable along the sliding groove based on the rotation of the catch; a striker; and a stopper disposed in the sliding groove, wherein when the catch is an open position, the striker is configured to enter and exit the locking groove, when the catch is in a locked position, the striker is restricted from entering and exiting the locking groove, and the stopper restricts the movement of the link arm to prevent the catch from rotating.