The darkening of the areola after pregnancy is a normal phenomenon, and the symptoms may gradually decrease after the birth of the fetus. Due to the change of hormone level in pregnant women, the increase of secretion of hormones such as estradiol, estriol, estradiol and human chorionic gonadotropin will promote the activation of melanocytes and then increase the secretion of melanin, which will lead to darkening of areola with melanin deposition in the areola area. Therefore, after pregnancy, the areola and nipple will become darker and the areola will expand a bit. These are normal phenomena during pregnancy, and usually after the birth of the fetus, the areola color will gradually lighten as the body’s hormone secretion and various systems return to their pre-pregnancy levels. In the middle of pregnancy, there will be obvious breast swelling, enlargement and nipple overflow, which are also physiological manifestations of pregnancy, as long as the maternity checkups are done on time and the results are not abnormal. During pregnancy, you can use a clean towel dipped in warm water and gently wipe your breasts to keep them clean. In the last three months of pregnancy, you can use a dry towel to moderately rub your nipples to increase the local skin toughness and facilitate breastfeeding of your baby later.