A server control unit of a pump monitoring server records, in a recording unit, a state of a pump together with a time at which the state of the pump is confirmed in a case where the server control unit has received the state of the pump confirmed by a medical practitioner from the pump within a first predetermined time from the start of clocking of a liquid delivery time by a clocking unit. In contrast, in a case where the server control unit has not received the state of the pump from the pump even after the first predetermined time has elapsed from the start of the clocking of the liquid delivery time by the clocking unit, the server control unit prompts the medical practitioner to confirm the pump.