Introduction Bronchial asthma is a chronic inflammatory condition involving a variety of cells including eosinophils, mast cells, T lymphocytes, neutrophils, and epithelial cells of the airway, as well as cellular elements, which gives rise to the increase of airway hyper-reactivity. Extensive changeable and reversible ventilation restriction is common and can cause recurrent tachypnea, feeling of out of breath, and coughing. The symptoms are more usually present and aggravated at night or early in the morning Remission might be achieved spontaneously or following treatmentIntroduction Bronchial asthma is a chronic inflammatory condition involving a variety of cells including eosinophils, mast cells, T lymphocytes, neutrophils, and epithelial cells of the airway, as well as cellular elements， which gives rise to the increase of airway hyper-reactivity. Extensive changeable and reversible ventilation restriction is common and can cause recurrent tachypnea, feeling of out of breath, and coughing. The symptoms are more usually present and aggravated at night or early in the morning. Remission might be achieved spontaneously or following treatment