Chest pain: It is a common clinical symptom, mainly caused by chest diseases, and rarely caused by other diseases. The degree of chest pain is related to differences in individual pain thresholds (each person does not feel pain in the same way) and is not entirely consistent with the degree of disease condition. The chest is roughly defined as the area from the head and neck of the body to the lowest rib, and pain in any part of the body during this period is collectively called chest pain. The source of pain can come from the heart, lungs, trachea, esophagus, ribs, intercostal nerves, muscle tissue, etc. The nature of chest pain can be knife-like, pinprick-like, cramp-like, constricting, tearing, pressure pain, burning pain, hidden pain, dull pain, cone pain, etc. The duration of pain varies. The diagnosis of the disease should be based on the age of onset, location of pain, nature of chest pain, duration, factors affecting pain and other comprehensive judgment. The following are several common diseases 1, angina pectoris: age mostly in middle age, site mostly in the middle or upper part of the sternal body after, but also across the whole chest, with the size of the palm of the hand, often accompanied by left-sided radiating pain. The nature is varied, but mostly not stabbing pain. Management: Medical attention is needed to prevent acute myocardial infarction, as the disease is a serious life-threatening condition. Assessment of the disease can be made, drug maintenance treatment, or active coronary intervention according to the severity. 2. Pulmonary embolism: sudden onset of chest pain during prolonged bed rest, often accompanied by dyspnea, cyanosis, hemoptysis, etc. Treatment: Medical treatment is required. Once diagnosed, thrombolysis or interventional surgery should be performed. 3. Clamped aneurysm: Most often seen in hypertensive patients, sudden onset of severe tearing-like pain or cone pain in the chest and back often occurs. Pale face, heavy sweating and blood pressure drop. The mortality rate of aneurysm once ruptured is extremely high. Treatment: conservative treatment is mostly not taken, depending on the location can be surgical or medical interventional treatment. 4.Lung cancer: pain is aggravated by breathing and coughing, dull pain or hidden pain, accompanied by coughing, hemoptysis, wheezing, hoarseness, weight loss, etc. Treatment: surgery, radiotherapy, chemotherapy. 5. Pneumonia or acute bronchitis: chest pain, cough, sputum, fever. Treatment: Medical attention is required. Anti-infection treatment. 6.Spontaneous pneumothorax: chest pain, shortness of breath, difficulty in breathing. Treatment: X-ray examination can confirm the diagnosis, the condition of light can do conservative treatment, bed rest for a few days can be self-recovery, serious patients to do closed drainage treatment. 7. Esophageal hiatal hernia: Burning pain in the middle of the chest, more pain when bending down. Treatment: Reduce weight. Eat less and eat more, take acid control medicine. 8.Muscle injury: strenuous activity, poor sleeping posture, recent injury, coughing, painful when touched. Treatment: need to exclude fracture, generally rest a few days to recover, can take oral non-steroidal drugs, etc. 9. Herpes zoster: blisters travel along the rib nerve, not exceeding the midline of the body surface, cut-like and sizzling. Treatment: antiviral treatment.