Most of the hard lumps disappear within a week or so when breast milk is returned, but it also depends on the woman’s own body type and diet, so it needs to be analyzed on a case-by-case basis. During breastfeeding, women’s breasts may become swollen and lumpy due to the accumulation of milk. It is recommended to wear loose, comfortable clothes and not tight underwear to prevent the lumps from increasing or not decreasing. In addition, you should eat a light diet and reduce the intake of bone broth and other soups, and not eat foods that are too oily, spicy or cold. During this period of breastfeeding, you should not feed your baby just because he or she is crying. You should keep your mood relaxed and do not rinse your breasts with hot water when bathing. Usually, after a week or so of reasonable care, hard lumps in the breast will gradually disappear. It should be noted that if the hard lump does not decrease or subside in a week or so, accompanied by obvious pain, you should go to the obstetrics and gynecology department or breast surgery department of a regular hospital to clarify the specific cause and then target treatment to avoid delaying the condition.