As a result of wearing masks for a longer period of time, the following methods can be tried when facial strangulation occurs: 1. Wear a mask with the appropriate looseness: generally wear a disposable medical surgical mask for low-risk exposure. Those who are in a position to do so can choose non-ear-mounted masks to reduce the friction and pressure on the skin behind the ear; 2, the wearing time should not be too long: if hygiene conditions allow, remove the mask in 2-3 hours or moderately change the position of the mask to make local decompression; 3, if the indentation is serious, you can use some topical ointment that can improve skin blood circulation to wipe to relieve; 4, if the skin becomes soft, wrinkled, etc., you can Apply emollient locally to reduce the stimulation of the skin by friction on the edge of the mask.