[Objective] To study the preparation of Zipu Capsule and its clinical effect on the treatment of chronic periodontitis. [Method] The extraction, concentration, drying and preparation process of the raw herbal materials for Zipu Capsule were selected out. And 60 cases of chronic periodontitis patients were randomly assigned to two groups and were treated with conventional therapy and nursing care, while the treatment group was added with taking the Zipu capsule, to compare the cura- tive effects of the two groups. [Result] Both of two groups showed decreases in gingival index （GO, periodontal pocket depth （PD） and attachment loss values （AL） after treatment, and those of the treatment group was significantly lower than those of the control group （P〈0.05）. The total curative effective rate of the treatment group was 91.17%, and 76.92% in the control group, and the differences between the two groups reached the significant level （P〈0.05）. [Conclusion] Zipu Capsule had definite therapeutic effect in treatment of chronic periodontitis and less adverse re- actions, which laid the foundation for the further development into drug products.
