If the left side of the chest shows vague pain, an electrocardiogram should be performed first to further exclude myocardial ischemia, especially in middle-aged and elderly patients with underlying diseases such as hypertension and diabetes, which can also trigger episodes of myocardial ischemia after exertion, and nitroglycerin and nitrate drugs can be given for treatment if necessary. It is also important to pay attention to regular checkups and dietary regimen. There are also some patients who have chest wall diseases or chest infections, which can be combined with chest X-ray, chest CT and other related examinations. For simple infection, intravenous anti-infection treatment can be chosen; while chest wall disease pain can be treated with oral pain medication, applying aminoglutethimide tablets or nimesulide dispersible tablets, and also pay attention to rest, avoid staying up late and not straining.