If the patient often feels that he always takes a deep breath before his chest is comfortable, it is mainly considered to be caused by lung diseases. This will easily cause the patient’s blood oxygen level to drop, resulting in a feeling of chest tightness. Patients need to inhale too much air each time to relieve, should actively treat lung diseases, can also be appropriate oxygen inhalation. 1, may be due to cardiac causes, mainly due to neurosis, often caused by palpitations, chest tightness symptoms. 2, due to vegetative nerve dysfunction, due to long-term anxiety, fatigue, and women in menopause can cause this phenomenon. If organic lesions have been ruled out, the two causes can be considered to be due to neurosis and vegetative nerve dysfunction.