The present invention provides an aqueous solution container replacement management system. The aqueous solution container replacement management system according to the present invention enables an aqueous solution container to be replaced at the right time by generating and outputting an alarm message according to the detection of a residual amount of an aqueous solution in the aqueous solution container, provides high usability at low cost by simplifying a configuration of a device and a system for the same, increases portability as well, accurately delivers the alarm message only to a selected specific person such as a patient, a guardian, or a manager through a portable terminal for receiving an aqueous solution container state, improves a sanitary property by detecting the residual amount of the aqueous solution without making contact with the aqueous solution, and minimizes a detection error by providing a structure in which the residual amount of the aqueous solution is detected directly from the surface of the aqueous solution container. The aqueous solution container replacement management system according to the present invention comprises: an aqueous solution container state detector, which comprises an aqueous solution container state detection sensor of which an upper end is attached to the surface of the aqueous solution container fixed at a set height, and transmits aqueous solution container state information detected from the aqueous solution container state detection sensor to the outside； and a portable terminal for receiving an aqueous solution container state, the portable terminal comprising a wireless communication unit for communicating with the aqueous solution container state detector in a wireless manner to receive the aqueous solution container state information, and having an aqueous solution management application installed therein to generate and output an alarm message under a condition in which the residual amount of the aqueous sol
