Pregnant nipple blackness caused by the increase of estrogen and progesterone, can be temporarily observed, choose the right underwear, pay attention to diet. 1. Temporary observation: pregnant nipple black is a normal physiological phenomenon, after the production of estrogen and progesterone secretion is normal, nipple color will slowly fade. Therefore, the nipple color blackened during pregnancy does not need special treatment, usually do a good job of breast cleaning, do not often toggle the nipple areola. 2. choose the right underwear: pregnant nipple black can choose loose, cotton underwear, do not choose tight underwear, minimize the underwear on the nipple areola friction. 3. Pay attention to diet: when pregnant nipple blackening can be light diet, pay attention to three meals a day diet nutrition, balanced, do not eat spicy, stimulation, greasy, heavy food. You don’t need to be too anxious when you are pregnant with dark nipples, keep a good mood, let nature take its course, and do a good job of taking regular checkups and paying attention to the health of the fetus.