The utility model relates to a mine water purifying treatment automatic spoil disposal device, which comprises a sedimentation or clarification unit and a raw water pipeline, wherein the sedimentation or clarification unit is used to treat sewage. The mine water purifying treatment automatic spoil disposal device further comprises a spoil disposal electric valve, a spoil disposal pipeline, a sampling tube, a sampling pump, a turbidity sensor, a turbidity transducer, a flow rate sensor, a flow rate transducer, an auxiliary control system and a PLC system, wherein the spoil disposal electric valve and the spoil disposal pipeline are arranged on the sedimentation or clarification unit, the spoil disposal pipeline is connected with the spoil disposal electric valve, the sampling tube and the sampling pump are arranged on the raw water pipeline, the turbidity sensor and the turbidity transducer which are used to collect raw water turbidity information is connected with the sampling pump, the flow rate sensor which is used to collect raw water flow rate information is arranged on the raw water pipeline, and the flow rate transducer is matched with the flow rate sensor. The auxiliary control system which is used to control the sampling pump and the spoil disposal electric valve is connected with the sampling pump and the spoil disposal electric valve, the PLC system is respectively connected with the turbidity transducer, the flow rate transducer and the auxiliary control system, and is used to treat flow rate turbidity information of the system and automatically control equipment. The mine water purifying treatment automatic spoil disposal device solves the technical problems that a prior sedimentation or clarification unit has low spoil disposal degree of automation, large labor strength of workers, and unstable water quality treatment and the like.