We are all familiar with the common symptoms of asthma, but it does not mean that the appearance of asthma-like symptoms means that you have asthma, you also need to exclude some other diseases, the common ones that we need to identify are as follows. (1) wheezing-like dyspnea caused by heart disease: also known as cardiogenic asthma, which is common in left heart heart failure, the symptoms during the attack are similar to asthma, but cardiogenic asthma mostly has a history of hypertension, coronary heart disease, rheumatic heart disease, etc. Typical patients often cough up pink foamy sputum; Wen Peng, Department of Respiratory Medicine, Shandong Chest Hospital (2) lung cancer: when central type lung cancer causes bronchial stenosis or is accompanied by infection, wheezing or asthma-like symptoms, but the dyspnea or croup symptoms of lung cancer are progressively aggravated, often without causation, and the cough may have sputum and blood; (3) wheezing bronchitis: it is actually chronic bronchitis combined with asthma, mostly seen in middle-aged and elderly people, with a history of chronic cough, and wheezing exists for years with exacerbation periods; (4) lesions in the trachea: foreign bodies, tumors, endothelial tuberculosis and other lesions in the trachea, when they cause obstruction of the trachea, can lead to similar symptoms; (5) pneumothorax: for adolescents with a lean and tall body type, as well as patients with large pulmonary alveoli in the lungs, sudden onset of chest tightness and shortness of breath, the possibility of pneumothorax should also be considered.