Blowing air-conditioning feeling chest tightness, may be related to transient hypoxia, or is itself suffering from underlying diseases, such as coronary atherosclerosis, bronchial asthma, according to the cause of the temporary observation or drug treatment. 1. Transient hypoxia: when blowing air-conditioning may be due to airflow, or because the temperature is too low and caused by transient hypoxia, so many people will suddenly feel tightness in the chest. After timely improvement of the environment, the symptoms will be reduced by themselves, generally no special treatment, temporary observation can be. 2. Coronary atherosclerosis: that is, coronary heart disease, these patients stay in the air-conditioned room for a long time inside, cold or because of the airflow is not the reason, the symptoms will be significantly worse. Currently should promptly improve the environment, oral nitrate drugs to expand blood vessels, such as nitroglycerin, isosorbide nitrate, if necessary, need to be combined with anti-thrombotic drug therapy, such as aspirin, clopidogrel, etc.. 3. Bronchial asthma: itself will appear chest tightness, shortness of breath, dyspnea symptoms, if long-term blowing air conditioning by cold air stimulation, the condition may be aggravated. Should improve the environment as soon as possible, and then use salbutamol inhalation treatment, such as symptoms are serious or belong to the acute attack period, should be combined with glucocorticoid drug therapy, such as budesonide. Feeling chest tightness when blowing air-conditioning, can first improve the environment, if the symptoms can not be alleviated or persist for a long period of time, you should seek medical advice.