When chest tightness occurs, move to a ventilated and cool place in time, breathe fresh air, loosen the collar and belt, relax your mood and body, and keep your emotions calm. If there is a history of angina pectoris with chest pain, panic and chest pressure, take nitroglycerin under the tongue and send to the doctor immediately. The patient’s chest tightness may be functional or organic. Functional ones are mostly seen in anger, exertion, lack of sleep, anxiety, etc. After removing the triggers, chest tightness symptoms can usually be relieved. In addition, chest tightness is usually related to respiratory system diseases, circulatory system diseases, or even due to toxic diseases, and different relief methods need to be selected according to the specific causes. Organic is mostly seen in the following cases: 1. Respiratory system diseases: If there is an oxygen absorber at home, oxygen therapy can be performed immediately. If asthma patients have chest tightness with severe wheezing and dyspnea, they can quickly use beclomethasone propionate aerosol and budesonide aerosol nasal spray to relieve asthma symptoms. Chest tightness caused by contact with domestic pets, flowers, willow, should be immediately isolated from allergenic substances. 2, circulatory system diseases: mostly seen in coronary heart disease, myocarditis, arrhythmia and other diseases, causing chest tightness, chest pain and other symptoms. Patients are advised to rest in a sitting or semi-sitting position, which is conducive to relieving symptoms, and can contain nitroglycerin, oral isosorbide nitrate, etc. 3, toxic diseases: such as gas leakage at home, resulting in slight carbon monoxide poisoning, or improper use of 84 disinfectant, resulting in chlorine poisoning, which can cause chest tightness, should quickly open windows and ventilation, evacuate the confined environment and transfer to a fresh air environment. In addition, if the patient’s chest tightness is not relieved after breathing fresh air, relieving exertion and emotion, pathological changes or organic diseases are mostly considered. The patient should seek medical attention promptly to identify the cause and actively treat the primary disease to avoid adverse consequences and life-threatening effects.