PURPOSE: To provide a mounting structure for frame elements of rimless spectacles which is capable of absorbing working errors of boring etc., and is easy to work.

CONSTITUTION: This mounting structure has frame element side turning prohibiting means 4 which are disposed at frame elements 1, lens side turning prohibiting means 7 which are disposed at lenses 5 and prohibit turning of the frame elements 1 cooperatively with the frame element side turning prohibiting means 4, fixing means 3, 8 which are used to fix the frame elements 1 contg. through holes 6 which are penetrated and disposed through the lenses 5 in their thickness directions and insert members 3 which are inserted into the through holes 6 to the lens 5 and insertion means 2 which are disposed at the frame elements 1 and are used to insert at least either of the insert members 3 and the frame element side turning prohibiting means 4 into the frame elements 1 freely displaceably in a straight line direction connecting the lens side turning prohibiting means 7 and the through-holes 6.