It is suggested that you take some anti-inflammatory drugs after local disinfection with ammonia water or 75% alcohol cotton ball.
3. If it's within 48 hours, you can apply cold compress, dip a wet towel in cold water, or maybe wrap an ice pack with a towel, and then apply hot compress after the swelling is reduced for 48 hours. Promote the absorption of congestion.
4. Some non-steroidal drugs can be considered to relieve pain. If there is obvious trauma, see if it is sutured to prevent auricle infection and avoid cartilage atrophy.