Chest pain indicates that the symptoms appear when changing position or pulling, which may be related to chest wall soft tissue injury, rib fracture, pleurisy and other diseases. 1. Chest wall soft tissue injury: when subjected to external force or sprain, resulting in local skin injury, muscle strain, etc., when changing position, chest pain and discomfort can occur, it is recommended to rest, avoid stress, can be self-healing. 2. Rib fracture: Injury or bumping by external damage can lead to rib fracture, pain can occur when taking a deep breath or holding out the chest, accompanied by localized obvious pressure pain, chest X-ray can be seen as discontinuity of the bone cortex. If the fracture is simple, the chest strap can be fixed externally, and the fracture can be healed by recuperation; if the fracture is dislocated, it is recommended to consult the hospital. 3. Pleurisy: lung inflammation, autoimmune disease, malignant tumors can cause pleurisy, chest pain, chest tightness, and in severe cases, dyspnea can occur, it is recommended to clarify the cause of the disease and then symptomatic treatment. If repeated pain or chest pain for a long time without relief, it is recommended to go to the hospital as soon as possible, early treatment.