Objective: To explore the lows in flavor nature and meridian entry of medicinals in syndrome differentiation and treatment of chronic bronchitis in the stage of exacerbations and stable. In order to suppose provide reference for clinical treatment of chronic bronchitis. Method: Follow the evidence based medicine(EBM) to collect papers

then analysis its involved herbs

determine those herbs’ nature of medicinals

flavor of medicinals and meridian entry

the data were analyzed with SPSS 17.0 software package. Result: In the stage of exacerbations the frequencies are 899 and in stable phase the frequencies are 711 and for those traditional Chinese medicine

nature of medicinals statistical analysis found that traditional Chinese medicine used in the stage of exacerbations is worm

peaceful and cold followed;and in stable phase worm herbs used most frequently then peaceful property herb

moderate the third.For flavor of medicinals acrid

then bitter and sweet

the cumulative frequency is 90.7%;and in stable phase the herb in used mostly sweet

then acrid and bitter;meridian entry of medicinals no for Fei channel tropism was the most either in the stage of exacerbations or in stable phase

then for Pi channel tropism followed. Conclusion: The worm traditional Chinese medicines should be use whether in the stage of exacerbations or stable phase

the method of strengthening earth to generate metal should use in the stage of exacerbations

and strengthening shen.