After weaning, the size of the breasts will increase or decrease, depending on the specific cause, whether it can be restored or not. If it is caused by normal breastfeeding, it can be recovered; if it is caused by pathological factors, it is usually difficult to recover by itself and needs to be corrected by surgery. 1. Normal situation: after weaning for half a year to two years, the mammary glands will have a very obvious recovery period. If the situation of a small breast after weaning is relatively mild, it can be recovered on its own. If the breasts do not recover after more than two years, you may need to consider other causes. 2. Pathological reasons: If the breasts have a size contrast before breastfeeding, it belongs to the situation of the breasts themselves, and can not be restored by itself. If necessary, one side of the breast can be improved by autologous fat filling, silicone breast augmentation, etc., so that the two breasts are equal in size. If the normal shape of the two breasts is more serious, it is possible that the supporting ligaments have been loosened or ruptured, and this situation can not be restored by itself. However, it can be improved by unilateral breast augmentation and unilateral breast lift. It is recommended that women with different sized breasts after weaning should consult a doctor in time and take appropriate treatment under the doctor’s guidance.