The present invention provides glasses having temples adjustable in length according to physical conditions of a user. The glasses comprise a main body including lenses, temples formed with ear-holding parts at rear ends curvedly and grooves at front ends, hinge elements foldably connection the temples to the body part, insert elements fitted and fixed into the groves of the temples and formed with screw holes, and control screws axially inserted into the hinge elements to rotate freely and screw-coupled in the screw holes of the insert elements to move the temples to and fro.