A drainage monitoring system is applicable to at least one drainage device and includes a wireless communication module capable of wirelessly communicating with a remote device, and a monitoring device having the same number as the at least one drainage device. The at least one monitoring device includes an upper sensor disposed in a container for receiving the drainage liquid, and a control unit for connecting the at least one drainage device and the wireless communication module. The control unit controls the at least one drainage device to stop the drainage when the upper sensor contacts the drainage liquid, and wirelessly transmits a reminder message indicating that the drainage is completed to the remote device through the wireless communication module. . By providing the upper sensor, the drainage can be stopped and notified when the amount of drainage liquid reaches a certain volume, so as to assist the nursing staff to accurately control the amount of drainage liquid in real time.一種引流監控系統適用於設於至少一引流裝置，並包含一能和一遠端設備無線通訊的無線通訊模組，及數量相同於該至少一引流裝置的監控裝置。該至少一監控裝置包括設於該引流裝置用於盛接引流液的一容器內的一上感測器，及一訊號連接該至少一引流裝置與該無線通訊模組的控制單元。該控制單元會於該上感測器接觸到該引流液而被觸發時控制該至少一引流裝置停止引流，並透過該無線通訊模組將一代表引流完畢的提醒訊息無線發送至該遠端設備。藉由設置該上感測器，能在引流液量達一定體積時停止引流並通報，以協助護理人員即時精準地掌控引流液量。
