Objectives: Study on a HPLC method for quantitative determination of oleanolic acid in Polyscias fruticosa (stems and leaves, and roots). Methods: Extracts of Polyscias fruticosa were hydrolyzed, purifified prior to quantity determination of oleanolic acid by HPLC Results:: A HPLC method to determine oleanolic acid in Polyscias fruticosa was established .Conclusions: The analytical method was proven to be reliable.