A little pain under the chest first needs to be identified as high-risk chest pain or moderate or mild chest pain. High-risk chest pains include acute coronary syndrome, acute pericardial compression, aortic coarctation and acute pulmonary embolism, etc. High-risk chest pains due to these causes require immediate hospital consultation. If acute coronary syndrome is diagnosed, drugs such as bailey aspirin and clopidogrel can be taken for two-way antiplatelet aggregation therapy, and 1-2 nitroglycerin can also be taken sublingually and the effect can be observed after 15 minutes. If the pain is relieved after taking nitroglycerin, the next step of treatment will be performed after further 18-lead electrocardiogram to clarify the diagnosis. In case of low-risk chest pain, costochondritis, costochondritis and chest stretching pain caused by trauma, antipyretic and analgesic drugs such as non-steroidal anti-inflammatory drugs (ibuprofen, Somitol) can be included, and the efficacy can be observed after 15-30 minutes, if the pain is relieved, local anti-inflammatory and analgesic drugs such as Fotarine can be applied for symptomatic treatment, if the chest pain is not relieved, continue to go to the hospital for further examination.