The causes of chest pain when the patient turns over are as follows: 1. brakes, failure to warm up well before strenuous exercise may cause intercostal muscle tension or intercostal muscle spasm, diaphragm spasm, which can cause chest pain or epigastric pain; 2. nonspecific costochondritis, which often occurs in young women, often shows symptoms of chest pain, especially when coughing, deep breathing or strenuous activity the pain will The pain is often worse with coughing, deep breathing or vigorous activity. When the pain is severe, it may cause radiating pain in the upper limbs and neck; 3, spontaneous pneumothorax, such as long and thin body type of patients in strenuous activities, may cause spontaneous pneumothorax, patients appear symptoms of chest pain, there will be chest tightness, breathing difficulties and other symptoms; 4, strained chest muscles caused by strenuous activities, can also appear this symptom. Therefore, in this case, it is necessary to pay attention to rest and avoid straining, and symptomatic treatment with anti-inflammatory and pain-relieving drugs is needed.