Oil stain cleaning machine

The invention provides a greasy dirt cleaning machine which comprises a machine body, a propelling device, a first adsorption device, a driving device and an oil-water separation device, greasy dirt on the water surface is adsorbed through oil absorption cotton wrapped on the adsorption device, the driving device drives the adsorption device to rotate, oil and water on the oil absorption cotton are scraped down through a scraping plate to enter the oil-water separation device, and the oil-water separation device is used for cleaning the greasy dirt on the water surface. The oil-water separation device comprises an oil-water mixing tank, a water tank and a water outlet tank, the oil-water mixing tank is communicated with the bottom of the water tank, the water tank is communicated with the top of the water outlet tank, oil and water are separated by utilizing the principle of a communicating vessel and the density difference of water and oil, and the oil-water separation device adopts a physical method to sepa