A latch structure according to an embodiment includes a cage having an engagement hole, a connector attachably and detachably held in the cage, the connector comprising a connector body having an almost rectangular parallelepiped shape and an insertion part to be inserted into the cage formed on an end surface of the connector body, a latch cover rockably installed in an upper surface of the connector body, being formed of a single plate material and having a cover body for covering the upper surface of the connector body, an engagement claw to engage with the engagement hole of the cage formed at an end portion of the latch cover, a spring member for always energizing the latch cover so that the engagement claw engages with the engagement hole, a rocking member formed in both sides of the cover body of the latch cover and formed by bending the plate material downward and a rocking groove formed in both side surfaces of the connector body for rockably engaging with the rocking member, wherein the rocking member is fitted to the rocking groove and the latch cover is rockably installed in the connector body.