Rotating ring pin tumbler lock cylinder structure and special key thereof

The invention discloses a rotating ring pin tumbler lock cylinder structure and a special key thereof. The rotating ring pin tumbler lock cylinder structure comprises a fixed solid lock shaft, a key hole layer, a rotating ring and a lock cylinder shell, and the fixed solid lock shaft is axially sleeved with the key hole layer, the rotating ring and the lock cylinder shell in sequence from inside to outside. One to two spiral grooves are formed in the inner hole wall of the key hole layer, a plurality of tumbler holes sequentially penetrating through the lock cylinder shell, the rotating ring and the bottoms of the spiral grooves of the key hole layer are formed in the lock cylinder shell in the radial direction, and the tumbler holes are sequentially filled with sharp-end tumblers, middle tumblers and compression springs. The sharp ends of the sharp-end tumblers abut against the outer circle face of the fixed solid lock shaft, the compression springs are located at the outer end of the lock cylinder shell and packaged through plug blocks, and the wall of the end, in a lock body, of the rotating ring is connected with a spring bolt transmission piece for opening a spring bolt.