The OPGW cable will be suspended from transmission line towers. Cable clamp can reduce the static stress of cable on the suspension point, improve the cable vibration resistance energy and force, suppress the dynamic stress of wind vibration; And ensure that the cable bending does not exceed the allowable value, so that the cable does not produce bending stress. Fiber optic cable installed with this clamp, will not produce harmful stress concentration, optical fiber will not produce additional loss.