Slight nipple flattening, if the overall extension of the breast is more ideal, you can not take measures, and will not affect the future breastfeeding. If you do want to improve, you can choose to massage and knead the nipple with both hands in the shower, and then gently stretch the tip of the nipple outward with your fingers, and then adhere to two minutes, repeated several times, long-term persistence can achieve better results. If the nipple flattening situation is relatively serious and the breast extension is not good, it is recommended to use a simple nipple corrector to stretch the nipple area. The stretching time is limited to about three to five minutes each time, and can be done several times a day. But pay attention to the strength and speed, do not just try to be fast and cause localized damage to the nipple. If the nipple is not just flat, but has reached the level of inversion, and the neck is short, it is recommended to correct and recover under the guidance of a doctor.