A cleaning robot system is provided. The cleaning robot system includes a cleaning robot including one or more mop members configured to clean a surface and a base station that operates in conjunction with the cleaning robot. The base station includes a housing, a cleaning notch disposed in the housing and configured to receive the one or more mop members during a cleaning process for cleaning the one or more mop members, at least one fluid inlet structure configured to supply a cleaning fluid to at least a portion of the one or more mop members, one or more protruding portions disposed in the cleaning notch and configured to scrape off the cleaning fluid from at least the portion of the one or more mop members, and a fluid discharge structure configured to drain the cleaning fluid from the cleaning notch.