Adjustable anti-falling device capable of adapting to thickness of hooked suspender

The utility model discloses an adjustable anti-falling device capable of adapting to the thickness of a hooked suspender, which comprises a handle part and a lock body part positioned above the handle part, a lock hole is formed in the middle of the lock body part, and a lock cylinder is mounted in the lock body part in a rotatable shaft manner, positioned on one side of the lock hole, U-shaped and capable of rotating in the area of the lock hole. The middle of the spoon-shaped lock tooth is installed in the lock body part in a shaft mode through a torsion spring and located on the other side of the lock hole, at least one lock tooth is arranged at the upper end of the spoon-shaped lock tooth, a bent pressing tongue at the other end of the spoon-shaped lock tooth is exposed out of the lock body part, and in a normal state, under the action of the torsion spring, the lock tooth end inclines downwards, and the pressing tongue tilts up to abut against a shell of the lock body part; the opening width of the lock