First, smell the smell. The smell of ear mites is sour. Then, look at the color, dark brown or brown. Then, press it with your hand. If it can be crushed smoothly, there will be normal earwax, and there will be no hard feeling. It's a little hard to squeeze if it's hard, ear mites. Finally, shine a light on the ear canal to see if there are any white bugs moving. If you are a little nauseous and phobic, please be careful, or take off a little earwax and look at it with a magnifying glass. Of course, sometimes you may not see it. Some sensitive bacteria can also cause the appearance of ear mites. If you really confirm, you can go to the pet hospital to check and confirm. Then use meow lotion on the cat's ears.