A rib fracture that has not grown in three months may be delayed healing, usually associated with separation of the fracture ends, embedded soft tissue, and poor circulation. Symptoms can be relieved by conservative treatment or surgery. 1. Separation of fracture ends: When the separation of fracture ends is more than 1mm or so, it will affect the bone healing. If the separation is large, internal fixation, including plate fixation and intramedullary nail fixation, should be performed as soon as possible. 2. Soft tissue embedding: When soft tissue embedding occurs, the fracture ends cannot be contacted and cannot be fixed, so the new bone cannot grow normally. Rotation is required. 3. Poor blood circulation: if the rib fracture has been lying in bed after the inactivity, it will lead to poor local blood circulation, affecting the healing of the fracture, can be accelerated by hot compresses, massage, etc. to accelerate blood circulation, which is conducive to the healing of the fracture stump. If the rib fracture does not heal in three months, you need to consult a doctor in time, through the X-ray examination to understand the situation, determine the degree of healing of the fracture, and then targeted treatment.