A monitoring system for intravenous drip is provided, including at least one intravenous drip device. The intravenous drip device includes a weight sensing unit, a drip speed sensing unit, a first storage unit and a first processing unit. The weight sensing unit detects a current weight of an infusion container and an infusion in the injection container, and outputs a first sensing signal corresponding to the current weight every predetermined time interval. The first storage unit stores a drip coefficient of the infusion container and a liquid density of the infusion. The first processing unit calculates drip remaining time according to the first sensing signal, the second sensing signal, the drip coefficient and the liquid density.一種點滴監測系統，包含至少一點滴裝置。點滴裝置包括一重量感測單元、一滴速感測單元、一第一儲存單元以及一第一處理單元。重量感測單元偵測一點滴容器以及點滴容器內之一輸液之一當前重量，並每隔一既定時間輸出對應於當前重量之一第一感測訊號。滴速感測單元偵測點滴容器之一當前點滴速率，並輸出對應於當前點滴速率之一第二感測訊號。第一儲存單元儲存對應於點滴容器之一點滴係數以及對應於輸液之一液體密度。第一處理單元根據第一感測訊號、第二感測訊號、點滴係數以及液體密度計算對應於點滴裝置之一點滴剩餘時間。
