Abstract: A temple mounting structure including a rim lug raised from one rim of an eyeglass frame having a vertical axle hole and a transverse guide slot in communication with the vertical axle hole, a circular swivel block turned in the vertical axle hole of the rim lug, a socket holding a compression spring, a temple having a shoulder stopped outside the socket and a coupling rod inserted through the socket and the compression spring into the transverse guide slot of the rim lug and fixed to the circular swivel block, and a stepped, tubular stop member mounted around the coupling rod of the temple and stopped between the rim lug and the compression spring and forced by the spring force of the compression spring to hold the temple between the operative position and the collapsed position.