Clinical study of Chinese herbs for reinforcing 'shen' and supplementing 'qi' in the prevention and cure of bronchial asthma

INTERVENTION: Group B:Budisonide+Bushen Fangchuan Pian(5 tablets,tid,orally taken for 12 weeks);Group A:Budisonide+chinese drugs for reinforcing shen and supplementing qi(125ml,bid,orally taken for 12 weeks);Group C:Budisonide+Chinese drugs for reinforcing shen and supplementing qi placebo+Bushen Fangchuan Pian placebo; CONDITION: Bronchial asthma PRIMARY OUTCOME: Asthma control test; SECONDARY OUTCOME: Asthma symptoms, lung function, Asthma Quality of Life, Questionnaire, traditional Chinese syndrome, blood cell count; INCLUSION CRITERIA: 1.Aged 18 to 70 years old, male or female; 2.Able and willing to provide signed informed consent; 3.Patients with partial controlled and uncontrolled asthma, and using inhaled corticosteroid treatment continuously at least three months; 4.Qi deficiency syndrome,shen qi deficiency syndrome and deficiency of Shenyang syndrome according to Traditional Chinese medical Differentiation; 5.Without Respiratory tract infection and Acute asthma attack for the past four weeks.