An endoscope reprocessor includes a control section and a flow liquid pump. The control section controls a plurality of electromagnetic valves to set a first drive state, in which the control section puts a first cleaning tube connected to a suction pipe sleeve of an endoscope into a sealed state, the control section puts a second cleaning tube connected to a forceps plug pipe sleeve of a forceps plug of the endoscope into an unsealed state, the control section controls an electromagnetic valve configured to switch a state of a connector plugging a suction cylinder of the endoscope to put the connector into a sealed state, the control section sets a state in which a fluid is supplied from the flow liquid pump to the first cleaning tube, and the control section halts supply of the fluid from the flow liquid pump to the second cleaning tube.