The common methods are: 1, bra method: choose to wear the right size bra, to avoid or correct the bad habits of bunching chest, so as not to further aggravate the nipple inversion. At the same time, open a nipple-sized hole in the center of the bra, put on the bra and make the nipple squeeze outward and keep it in a prominent position. 2, negative pressure method: available syringe jacket tube set in the nipple part, can also use a small wine cup buckle nipple, plus cloth belt pressure, or cupping cans outward sucking, but also available plastic cans pinch flat and buckle around the nipple, let go also have suction, the same role of cupping. 3, the technique of pulling: girlhood is an important period of breast development, is also an important period of correction of nipple invagination. Frequent nipple pulling can make both breasts stand out and increase the support of the surrounding skin, playing a “shaping” role. This can be done several times a day. Over time, the nipples will gradually bulge outward. If you can’t pull it, you can push the skin of the breast near the nipple outward. 4. Suction therapy: Apply the nipple suction device several times a day, using its negative pressure to induce nipple bulging. 5.With nipple corrector: Nipple corrector can treat flat or sunken nipples and wear for a longer period of time. 6.Surgical method: choose different surgical methods according to the degree of indentation.