A pair of rotary glasses comprising a lens, a glasses leg, and a pivot element. The support portion includes a second pivot portion corresponding to the first pivotal transverse through hole. The pivot element is passed through the first pivotal transverse through hole and the second pivot portion to pivotally couple each glasses leg. With this structural design, a user can longitudinally rotate the support portion by using the pivot element as an axis towards or away from the upper edge of the lens or the glasses frame so that the folding portion of the glasses leg and the lens or the glasses frame can support the rotary glasses on a disposing surface securely. Therefore, the rotary glasses will not lose balance or topple over by a slight external force so as to prevent the lens or the glasses frame from damage.