The invention discloses an integrated lock cylinder structure which comprises a lock shell. A lock liner is rotatably arranged in the lock shell, a key hole where a key is inserted is formed in the lock liner, the lock shell is divided into a front lock shell and a back lock shell, an open slot is formed between the front lock shell and the back lock shell, a pulling mop is arranged in the open slot, the pulling mop is provided with a first penetrating hole, the front and back lock shells are separately provided with a second penetrating hole and a third penetrating hole in a one-to-one corresponding manner, the lock liner successively penetrates the second through hole, the first through hole and the third through hole, so that the lock liner rotates relative to the lock shell, a first accommodating slot communicating to the key hole is formed in the front surface of the lock liner, a matching assembly matched with a bit of the key is arranged in the second accommodating slot, and thekey controls a main locking pin assembly by the matching assembly to drive the pulling mop to rotate so as to lock or unlock the lock cylinder. Therefore, the integrated lock cylinder structure is simple in structure, low in manufacturing cost and high in safety coefficient.