There are many reasons why breasts are small and sagging, and the methods adopted are different, the specific measures are as follows: 1, supplemental nutrients, after the end of the lactation period due to the consumption of breastfeeding and body thinning will lead to a large amount of loss of fat in the breasts, appearing in the breasts to become small and sagging, you can add more high-protein substances, such as fish protein. 2, autologous fat filling, the aftereffects of the use of autologous fat filling is small, the trauma is relatively small, and the reaction of rejection is not. No, the shape of the breast is more natural after the operation, but the fat will be absorbed, the maintenance time is limited. 3, breast implant augmentation, trauma is relatively large, there is a certain degree of rejection, the use of breast augmentation material will not be absorbed, the maintenance time is relatively long, after the operation, we should pay attention to protect the operation area, to prevent infection, and at the same time, the use of mussels viscous protein is beneficial to the recovery of the scar. 4, exercise, appropriate muscle building exercises to increase chest muscles.