OBJECTIVE： To study the new formula of effective components in TCM for anti-allergic rhinitis （AR）， and provide reference for developing TCM preparations for anti-AR. METHODS： Using pseudoephedrine hydrochloride （0-13.5 mg/kg）， total alkaloid extracts of Aconitum carmichaelii （0-21.18 mg/kg）， volatile oil of asari radix （0-0.009 2 mL/kg） in Mahuang Fuzi Xixin decoction as formula objects， uniform design method was used for drug grouping， and multiple regression analysis was conducted for the behavioral scores before and after administration， contents of histamine and immunoglobulin E （IgE） in serum of AR guinea pigs to obtain the best formula. Using Xinqin granule， Loratadine tablet， Mahuang Fuzi Xixin decoction respectively as positive control， efficacy of the best formula was verified from aspects of behavioral scores before and after administration， contents of histamine and IgE of AR guinea pigs. And the safety of the best formula was preliminarily observed through acute toxicity test in mice. RESULTS： The best formula was as follow as pseudoephedrine hydrochloride 11.25 mg/kg， total alkaloid extracts of A. carmichaelii 21.18 mg/kg， volatile oil of asari radix 0.004 5 mL/kg. Compared with each positive drug group， there were no significant differences in behavioral scores before and after administration in the best formula group （P＞0.05）. While compared with Xinqin granule group and Mahuang Fuzi Xixin decoction group， histamine content in serum in the best formula group was significantly reduced （P＜0.05）； compared with Xinqin granule and Loratadine tablet group， IgE content in serum in the best formula group was significant decreased （P＜0.05）. Median lethal dose of the best formula was 1 822.04 mg/kg. CONCLUSIONS： The screened best formula shows better effect than Xinqin granule and Mahuang Fuzi Xixin decoction in terms of reducing histamine content in serum， better than Loratadine tablet and Xinqin granule in terms of reducing IgE content in serum， with good safety， which indicates the feasibility of TCM effective component formula to a certain degree.