① The recovery period of surgery has not passed: at this time, the fit between the prosthesis and the body is not high enough, and it feels a little hard. Generally speaking, the chest will become softer and softer 3-6 months after operation. The longer the time, the more natural the effect and the more real and soft the hand feel.

② Different degrees of fibrous capsule contracture: Capsule contracture is a common complication of breast augmentation with prosthesis, which refers to excessive contraction of capsule caused by foreign body reaction (the prosthesis will not harden and the capsule is hard). Mild capsular contracture does not need treatment or removal, but it is not as soft as the true chest. Severe capsular contracture: the appearance is deformed, the touch is difficult, accompanied by pain, and it needs surgical repair or direct removal.