Clinically, there are 3 main ways to judge healthy breasts, which include size symmetry, breast position, breast feel, nipple areola and other conditions. 1. Symmetrical size: Both sides of the breast are relatively full and nearly symmetrical in size. 2. Breast position: most of a woman’s breasts are on the pectoralis major muscle in adulthood. The range should be between the second and sixth ribs, with the inner side not exceeding the center of the sternum, and the outer side mostly on the anterior axillary line. 3. Breast feel: Healthy breasts have a softer texture. If you find hard lumps when touching your breasts, you must pay attention to them. 4. Nipple areola: women’s nipple and areola are usually pinkish-brown or light red, with the nipple protruding outward, about 0.8 to 1.5 centimeters in diameter, and the surface is uneven; the areola is located in the center of the surface of the breast skin, and the diameter is usually 3 to 6 centimeters. Once the breast abnormality is found, go to the breast surgery department of the regular hospital as soon as possible.