The invention discloses a flexible hinge of glasses, which comprises a pile head, a moving part and a containing body. A cam is arranged at one end of the pile head, the end of the pile head is movably connected with the moving part through a pin, the moving part is movably arranged in the containing body, one end of the containing body contacts with the cam end of the pile head, the other end ofthe pile head is connected with a temple, the containing body is connected with the temple, the moving part is connected with a spring sheet serving as an energy storage element, the spring sheet is movably arranged in a sleeve in an inner cavity of the containing body, the pile head rotates relative to the moving part, the containing body horizontally moves forwards and backwards relative to themoving part by the aid of the cam end of the pile head, the containing body drives the sleeve to move so that the spring sheet moves relative to the sleeve and then deforms, and accordingly flexibility is generated. The flexible hinge is simple in process, operating efficiency can be improved, and mass production can be realized.