A moving handrail disinfecting device for passenger conveyor whereby disinfection solutions can be suitably used depending on the situations of the device and the like, resulting in appropriate disinfection treatment with little waste, is a moving handrail disinfecting device 10B, having a contact roller switching unit comprising an applying roller 17 to be allowed to make contact with the surface of a moving handrail 5, a first impregnating roller 18 and a second impregnating roller 19 which supply disinfection solutions, a first slide section 22A, a second slide section 22B and a sliding mechanism 23A which separately slides the both, wherein a control unit 60B controls the sliding mechanism 23A to separately slide the first slide section 22A and the second slide section 22B so as to switch a roller to be allowed to make contact with the applying roller 17 from the first impregnating roller 18 to the second impregnating roller 19, or from the second impregnating roller 19 to the first impregnating roller 18, when a prescribed switching condition was satisfied.
