A complete normally- closed integrated monitor and control system for inclined land lifting has developed adopting SIEMENS series S7 - 200 PLC. This system can self - locking when there are two mine cars or one and one mine cars at the same place in inclined lane, mine car is jammed, winch cable is broken, mine car is unhooked, and mine car runs over speed, the system has alarm function also, so the occurrences of major accidents caused by above things can be prevented.