There is no good way to improve congenital flat chest, mainly through plastic surgery methods, such as fat-filled breast augmentation, breast implant augmentation, breast injection and so on. 1. Fat-filled breast augmentation: mainly extract excess fat from other parts of the body, such as thighs, buttocks, waist and abdomen, etc., and inject it into the breast after special treatment, so as to enlarge the breast. 2. Breast augmentation with implants: Silicone implants are more commonly used nowadays, which are implanted into the chest wall to achieve the effect of breast remodeling. 3. Breast augmentation by injection: For example, hydrophilic polypropylene amide hydrogel is injected into the breasts to swell them up. Congenital flat chest does not affect the health of the body, usually do not need to take special treatment, but if you feel that it affects the aesthetics, you must go to a regular hospital to take treatment.