Cleaning device

A cleaning device, comprising:

• a device main body;
• a drive assembly, connected to the device main body and configured to drive the device main body to move along a surface to be cleaned;
• a roller, configured to clean the surface to be cleaned;
• a lifting assembly, connected to the device main body and the roller for driving the roller to switch between a lowered position and a raised position;
• wherein in a case where the roller is in the lowered position, the roller contacts the surface to be cleaned;
• in a case where the roller is in the raised position, the roller is separated from the surface to be cleaned;
• and
• a wastewater collection assembly;
• wherein the wastewater collection assembly comprises a water scrapper, and the water scrapper is configured to abut against the roller regardless of whether the roller is in the lowered position or the raised position, for scrapping out wastewater in the roller.