Large breasts may be caused by obesity, congenital developmental factors, you can lose weight, liposuction or surgery to make your breasts smaller. 1. Weight loss: if it is caused by obesity, pay attention to diet control, eat less food with high fat content, and participate in physical exercise, do more chest expansion exercise, when the weight is reduced, the chest will also be reduced. 2. Liposuction: If there is more fat in the breasts, you can take the method of local liposuction to draw out the excess fat, so as to reduce the size of the breasts. 3. Surgery: If your breasts are too big and inconvenient to your life, you can take breast reduction surgery to remove part of your breast tissue. If you want to make your breasts a little smaller you must identify the cause and take a systematic approach.