A cleaning device for a small electrical appliance, comprising: a container for storing cleaning liquid to be supplied to clean a cleaned part of the small electrical appliance; a housing part configured to be mountable with the container, the housing comprising a bottom plate and a base that is vertically movable with respect to the bottom plate; and a sealing member configured to provide waterproofing between the base and an opening part of the container while the container is mounted to the housing part, wherein the sealing member is formed of an elastic member, and comprises: a first rib that projects outward along a second direction; and a second rib that extends along a first direction, and wherein a pressure applied to the base by the container being housed in the housing part defines the first direction, and a direction crossing the first direction at right angle defines the second direction, wherein when the container is set in the housing part and the pressure is applied to the base in the first direction, the first rib is bent in a direction opposite to the first direction, around a contact point of the first rib coming into contact with the end face of the container, as a fulcrum, and the second rib is bent outward along the second direction according to bending of the first rib, so that an outer peripheral face of the second rib closely comes into contact with an inner peripheral face of the container. a container for storing cleaning liquid to be supplied to clean a cleaned part of the small electrical appliance; a housing part configured to be mountable with the container, the housing comprising a bottom plate and a base that is vertically movable with respect to the bottom plate; and a sealing member configured to provide waterproofing between the base and an opening part of the container while the container is mounted to the housing part, wherein the sealing member is formed of an elastic member, and comprises: a first rib that projects outward along a second direction; and a second rib that extends along a first direction, and wherein a pressure applied to the base by the container being housed in the housing part defines the first direction, and a direction crossing the first direction at right angle defines the second direction, wherein when the container is set in the housing part and the pressure is applied to the base in the first direction, the first rib is bent in a direction opposite to the first direction, around a contact point of the first rib coming into contact with the end face of the container, as a fulcrum, and the second rib is bent outward along the second direction according to bending of the first rib, so that an outer peripheral face of the second rib closely comes into contact with an inner peripheral face of the container. a first rib that projects outward along a second direction; and a second rib that extends along a first direction, and wherein a pressure applied to the base by the container being housed in the housing part defines the first direction, and a direction crossing the first direction at right angle defines the second direction, wherein when the container is set in the housing part and the pressure is applied to the base in the first direction, the first rib is bent in a direction opposite to the first direction, around a contact point of the first rib coming into contact with the end face of the container, as a fulcrum, and the second rib is bent outward along the second direction according to bending of the first rib, so that an outer peripheral face of the second rib closely comes into contact with an inner peripheral face of the container.