The owner does not need to wear the ring for 2 hours after applying ringworm on the cat, but it is best to keep wearing it. The main function of the shame ring is to prevent the cat from licking and scratching the ringworm, and it can also prevent the spread of ringworm. After a cat suffers from cat ringworm, the owner should insist on applying antiseptic drugs to the cat. It is best to combine vitamin B and sunlight exposure to promote the treatment of cat ringworm and accelerate the growth of the skin.