Normal breasts will have a hard ring inside. The breast is made up of the nipple, breast tissue, subcutaneous fat tissue that encases the gland, connective tissue, and the suspensory ligament that suspends the breast. If there is more fat in the breast and fewer ductal glands, the inside of the breast is soft when touched with the hand. If there is less fat in the breast and more lobules, you may find a hard ring of glandular tissue inside the breast when you touch it with your hand. A hard ring inside the breast will be symmetrical bilaterally, i.e., when one breast can be felt, the other can also be felt. Women should do a good job of breast self-examination on a daily basis, and if there is any abnormality in the breast, it is recommended to go to the hospital in time to do the relevant examination, with the aim of early detection and early treatment.