An eyeglasses leg mount structure includes two connecting units, each movably installed on an eyeglasses frame and each interconnected to an insert slot, wherein the insert slots are tapered inwardly from distal surfaces of the connecting units, and a shaft hole is formed on each connecting unit and interconnected to the insert slot, and each connecting unit includes an interfering portion; and two leg mount units, each having a pair of connecting parts disposed at an end of the connecting unit and inserted into the insert slot, wherein each leg mount unit includes an elastic plate installed on a side of the connecting part and pivotally coupled to the shaft hole, and each leg mount unit includes a latch portion corresponding to the interfering portion, so as to allow users to adjust the eyeglasses and remove eyeglasses legs or an eyeglasses strap conveniently.