The invention discloses a device for monitoring the quantity and the quality of leakage water, relating to the field of leakage water monitoring, solving the problems of low work efficiency and high cost in the traditional device of monitoring the quantity and the quality of the leakage water and comprising a plurality of leakage barrels, a water level sensor, a gas moisture absorber, a pluralityof electromagnetic valves, an electric conductance sensor, a water measuring cup, a vacuum pump, a monitor host and a computer. The water measuring cup is provided with four conduits, each conduit isprovided with a valve, a water outlet pipe of each leakage barrel is communicated with each electromagnetic valve, water outlet pipes of the plurality of electromagnetic valves are communicated with a water inlet pipe of the water measuring cup, the input end of each electromagnetic valve is communicated with the output end of the monitor host, the gas outlet pipe of the water measuring cup is communicated with the gas moisture absorber, the gas moisture absorber is communicated with the vacuum pump, the water level sensor and the electric conductance sensor are respectively arranged in the water measuring cup, the signal output ends of the water level sensor and the electric conductance sensor are respectively connected with the signal input end of the monitor host, and the signal outputend of the monitor host is connected with the signal input end of a computer. The invention is suitable for the field of water monitoring.