Clinical Research Directory

Inclusion Criteria: 1. Males or females, aged 14-75 years; 2. Patients with a definite diagnosis of bronchial asthma; 3. The diagnosis of asthma according to the Global Initiative for Asthma (GINA), with positive bronchodilator responsiveness (reversibility) test; 4. Healthy volunteers without respiratory symptoms such as cough, wheezing, chest tightness or dyspnea; 5. Agree with all procedures in this trial by signing a written informed consent form. Exclusion Criteria: 1. Patients with chronic obstructive pulmonary disease or other airway disease; 2. Complicated with other severe primary diseases (including hypertension, cancer, hyperthyroidism, bronchiectasia, cardiac insufficiency) and conditions that would prevent participation in the trial or put the participant at risk; 3. Women who are known to be pregnant or breastfeeding; 4. Not willing to participate; 5. Psychiatric history and neurological disorders can not work normally; 6. Other conditions that the researcher considers inappropriate to participate in this study.