The utility model discloses a drill floor slip monitoring system which comprises a PLC control module, the input end of the PLC control module is in signal connection with a height signal acquisitionmodule and a path acquisition module, and the output end of the PLC control module is electrically connected with an alarm module and a display module. According to the drill floor slippage monitoringsystem, the height signal acquisition module can be used for acquiring the height of the base away from the ground in the drill floor slippage process, it can be guaranteed that the drill floor can be completely separated from the guide rail, and unsafe factors caused by friction force are eliminated; The two path acquisition modules can monitor the displacement conditions of the oil cylinders onthe left side and the right side in the sliding direction, and unsafe factors caused by too large displacement difference are prevented; The sliding process of the drill floor sliding mechanism can be intelligently monitored, personnel allocation is reduced, and the production efficiency is improved.