If you are breastfeeding, it is recommended that you let your baby suckle more often so that the milk ducts can be opened more freely. If the distention is more serious, use hot towels to apply warm compresses, and then do gentle massage with the help of family members to make the milk ducts more open. If necessary, you can also use a comb to comb the ducts in the direction they travel, which will also open them up. If this condition is not treated in time, it may lead to stagnation of milk and inflammation of the mammary glands. If localized redness, swelling, heat, pain, etc. appear, go to the hospital for examination, most of them are caused by inflammation of the mammary gland.