The utility model relates to an unit seepage quality of water on-line monitoring and processing system. The utility model aims at providing a simple structure, convenient operation's unit seepage quality of water on-line monitoring and processing system handles producing the percolating water that pollutes, guarantees to make seepage discharge water safe and reliable. The utility model provides a: percolating water at each bearing of unit and speed control system place all is provided with the seepage pipeline alone, and the seepage pipeline divides into two way bye-passes behind water quality testing assay appearance, compiles house steward through first valve group, oily sewage all the way and feeds through the oily sewage well, and another way is compiled house steward through second valve group, percolating water up to standard and is fed through percolating water sump pit up to standard, and the oily sewage well is through oily sewage treatment facility and first switching valve intercommunication percolating water sump pit up to standard, and percolating water sump pit up to standard feeds through the low reaches river course through the pump package that draws water, water quality testing analysis appearance is connected with computer monitoring system circuit, computer monitoring system and first, the circuit connection of second valve group.