If the lips are swollen after an external impact, you can first apply a cold compress with an ice towel. Half an hour or so to change to hot towel hot compress, not only can prevent lip swelling, but also can accelerate the absorption of swollen parts, can relieve the pain caused by external impact later. If the impact site is obvious and the epidermis is broken, you need to choose to use iodophor solution to disinfect. Then apply a hot towel to accelerate the absorption of subcutaneous fluid in the lip area to reduce the swelling. You can also apply tacrolimus ointment or pimecrolimus cream locally, which are immunomodulators and can accelerate the local fluid metabolism and absorption to achieve the ideal treatment effect. However, do not blindly use hormonal creams to prevent glucocorticoids from stimulating the skin mucosa and forming hormone-dependent dermatitis.