There is no such thing as the best remedy for flat chest, it may be related to body thinness, underdevelopment, other factors, etc. It can be remedied through diet and life conditioning, exercise and sports, and surgical breast augmentation. 1. Thin body: If the female body is too thin, need to increase the fat content, eat more rich in collagen and high protein pig’s feet, meat, eggs, dairy and other foods, body fat increase, flat chest may be improved. 2. Dysplasia: If the chest is flat due to dysplasia, or the chest is flared, you can increase the muscle content of the pectoralis major muscle by exercising the chest muscles, which will have the effect of improving the chest shape. If necessary, it can be improved by breast augmentation with autologous fat or breast implant. 3. Other factors: If the flat chest is caused by breastfeeding or diseases, it can be improved by breast augmentation surgery, implanting prosthesis under the mammary glands or injecting autologous fat, which can make the breasts have the effect of enlarging. It is recommended that patients with flat chest should seek medical treatment in time and follow the doctor’s instructions to carry out the corresponding remedial treatment.