As a humidifying device, a humidifying/air cleaning device comprises: a device main body (12); a humidifying tray (30) provided in a removable manner in the device main body (12); and a humidifying filter (41) that is installed in the humidifying tray (30) and humidifies air. The humidifying tray (30) has a tray main body (31) capable of storing water, and a handle part (42) attached to the tray main body (31). The device main body (12) has a wall section (58) positioned above the humidifying filter (41) and facing the humidifying filter (41) with a gap therebetween. The handle part (42) is arranged in the gap between the humidifying filter (41) and wall section (58). By means of this configuration, provided is a humidifying device wherein it is possible to prevent the humidifying filter from being disposed popped-up in an unsecured manner in the humidifying tray.