Guben Qushi Granule for Allergic Asthma: A Randomazied Double-blinded Placebo-controlled Pilot Study and its Therapeutic Mechanism

INTERVENTION: Control group:Guben Qushi Placebo Granule;Experimental group:Guben Qushi Granule; CONDITION: Allergic Asthma PRIMARY OUTCOME: ACT score; SECONDARY OUTCOME: ACQ questionnaire;Changes of FeNO;Blood EOS;Frequency;the Dampness Syndrome Scale of Chinese Medicine;Changes of pulmonary function parameters;Asthma symptom score;Sputum EOS%;AQLQ questionnaire; INCLUSION CRITERIA: ?Patients who are aged 18–75 years; ?Patients who meet the diagnostic criteria of allergic asthma, with the chronic persistent stage, diagnosed with mild to moderate stage; ?ACT score is Less than or equal to 19 points; ?Patients who meet the Chinese medicine syndrome classification of Qi deficiency and dampness obstruction; ?Patients who sign the informed consent form.