Large, sagging and soft breasts are mostly caused by physiological factors, breastfeeding or breast hypertrophy, which can be intervened through functional exercise, nutritional support, choosing suitable underwear and surgery. 1. Functional exercise, through the exercise of the upper body muscles, such as: pectoralis major, deltoid muscle, etc. to achieve the effect of lifting the breast, and at the same time, choose the right underwear, do not be too much compression of the breasts, and do not make them sagging. 2. Nutritional support, the breasts are soft because the elastic fiber of the skin is underdeveloped or damaged, which can be repaired by eating more food with high protein content. 3. Surgical intervention, adolescent females will show signs of breast hypertrophy due to overgrowth of breast glands and fatty connective tissues, which can be adjusted to the right size through local excision and reconstructive surgery. It is recommended to consult a specialized physician at a regular hospital for targeted treatment.