Normal breasts of developing women usually have hard lumps, but they can disappear gradually with growth and development; normal breasts of women in other periods do not have hard lumps. When a woman is developing, her breasts will continue to grow, in this case, hard lumps may appear in the breasts, the mobility of the hard lumps is good when touching them, and they are not accompanied by other obvious symptoms, and they will disappear gradually with growth and development, which is a normal physiological phenomenon, and does not need to be overly concerned about it. However, if it is not in accordance with the above situation, it is not normal, and you need to consult a doctor for a clear diagnosis. There are no hard lumps in the normal breasts of women in other periods. If there are hard lumps, they may be related to breast hyperplasia, breast cancer or breast fibroma, which is not normal. It is recommended that women go to the hospital for further examination to clarify the specific causes of hard lumps in the chest. Women should go to the hospital promptly after the appearance of hard lumps in the chest.