The invention discloses a monitoring system of an automatic drainage device, and the monitoring system comprises a data collection module, a data processing module and a monitoring module, wherein the data collection module is used for obtaining the downhole monitoring data through a senor; and the data processing module is used for calculating out the control parameter of the automatic drainage device according to the monitoring data, and the monitoring module is used for controlling the drainage execution time and drainage frequency of the automatic drainage device according to the control parameter. The monitoring system of the automatic drainage device provided by the invention has the advantages of realizing the automation control of the automatic drainage device, ensuring the control of the automatic drainage device to depart from the manual operation, reducing the workload of operation staffs in a machine room, avoiding the wrong operation caused by human reasons, and improving the work efficiency of the mining production.