1. If the injury time exceeds 24 hours, there is no skin damage at the bruise. You can apply a hot towel for 30 minutes every day. If the towel is cold, it should be replaced in time to promote local blood circulation and remove blood stasis. 2. Generally, the medicinal liquor should be coated on the serious medicinal liquor (no medicinal liquor can be replaced by strong liquor) and gently rubbed until it feels a little hot. Rub vigorously in the direction of blood vessels. Don't wipe it when the blood flow is fast at noon, or use a towel to heat it until the skin turns red when taking a bath at night. If it is serious, it is recommended to see a doctor. If you can apply a cold towel for 30 minutes within 24 hours after the injury, you should change the towel in time if it is hot. If it is too troublesome, you can directly rinse the bruised area with cold water for 30 minutes.