Normal areola can be said from the following aspects: 1, color, areola color varies, and skin color and breastfeeding, pregnancy is closely related. During puberty, the color is lighter and rose-red, darker skin color will be a little deeper, the color further deepens during pregnancy and breastfeeding, and the color will not fade after breastfeeding. 2, size, the diameter of the adult areola is about 3-6cm, the areola will also be with the hormonal changes in pregnancy and breastfeeding during the body to become larger, the size of the areola and the size of the breast are closely related to the size of the breasts, breasts are large areola tends to be larger, and vice versa. 3, the shape of the areola is a ring-shaped area of deeper pigmentation of the skin around the nipple. The ring-shaped area with deeper skin pigmentation around the nipple is a ring-shaped pigmented area with symmetrical color and shape. The skin around the areola is hypertrophied and elevated with small bumps for sebaceous glands called Montgomery glands or Montgomery’s nodes, which secretes liquid to lubricate the nipple as well as protect the nipple.