OBJECTIVE： To observe the clinical efficacy and complications of TCM in the adjuvant treatment of asthma and allergic rhinitis. METHODS： 160 patients with asthma and allergic rhinitis were divided into control group and observation group according to the visiting order of odd or even， 80 cases in each group. Control group received basic western medicine， such as loratadine and budesonide used for allergic rhinitis， salmeterol/fluticasone and leukotriene for asthma； observation group additionally received TCM （inline treatment + external treatment）， the treatment course was 3 months. Clinical efficacy and complications in 2 groups were compared. RESULTS： The observation group had 2 cases of fall-off patients， and the control group had 3 cases. The total effective rate in observation group was 97.43％， which was higher than control group （74.03％）， the difference was statistically significant （P＜0.05）. The incidence of complications in observation group was 8.97％， which was lower than control group （19.48％）， the difference was statistically significant （P＜0.05）. CONCLUSIONS： TCM can obviously relieve clinical symptoms， improve efficacy and reduce the incidence of complications in the adjuvant treatment of patients with asthma and allergic rhinitis.