The presence of a feeling of not being able to inhale to the end when taking a deep breath, in the clinical mainly reflects a pathological state of dyspnea, which manifests itself as inspiratory dyspnea. It is the degree of expansion of lung tissue is restricted, and the respiratory tract appears to be obstructed to varying degrees. It can be seen in the occurrence of inspiratory dyspnea symptoms caused by wheezing bronchitis, bronchitis, bronchial asthma, cough variant asthma, acute pharyngolaryngitis, epiglottitis, acute exacerbation of chronic pharyngolaryngitis, adenoid hypertrophy, tonsillitis. At this time, you can take a CT of both lungs, do lung function test, and if necessary, do nasopharyngeal endoscopy, to clarify the cause of the disease and its condition, and carry out timely treatment.