Cat ear mites are mostly caused by owners not cleaning the cat's ears regularly, resulting in too much oil and bacteria in the cat's ears, resulting in ear mites. Sometimes, it may also be caused by accidentally dripping water during bathing. If your cat's ears are not cleaned in time, the ear canal will become moist, causing bacteria to breed and cause ear mites. Therefore, it is best for owners to clean their cats regularly to prevent the occurrence of ear mites.