NOVELTY - Preparing high-purity ursolic acid and oleanolic acid from glossy privet comprises: e.g. boiling glossy privet leaves or glossy privet fruit in alkaline water, filtering, washing the alkalized product by using hot water to remove the wax containing impurities, taking pure water, extracting the obtained drug residues in a boiling water bath, filtering, taking ethanol solution, extracting in the water bath, refluxing, filtering the solution to obtain an ethanol extract solution, decoloring the ethanol extract solution by using activated carbon, and filtering to remove the activated carbon.    USE - The prepared ursolic acid and oleanolic acid are useful for lowering blood fat, treating cardiovascular diseases and liver diseases.    ADVANTAGE - The method is simple, ecofriendly and suitable for large scale industrial production, and produces economical product.    DETAILED DESCRIPTION - Preparing high-purity ursolic acid and oleanolic acid from glossy privet comprises: (i) boiling glossy privet leaves or glossy privet fruit in alkaline water, filtering the hot material, washing the alkalized product by using hot water to remove the wax containing impurities, taking pure water as extracting solution, extracting the obtained drug residues in a boiling water bath, filtering the solution, taking ethanol solution as a solvent, extracting the filter residue in the water bath, refluxing, and filtering the solution to obtain an ethanol extract solution; (ii) decoloring the ethanol extract solution by using activated carbon, filtering the solution to remove the activated carbon, adjusting the pH value of the ethanol extract solution to alkaline, allowing to stand the solution, filtering the impurities, vacuum extracting and concentrating the filtrate until a small volume is obtained, filtering the filtrate to obtain a filtered product, which is an oleanolic acid crude product, adjusting the pH value of the filtrate to acidic, adding into pure water with the same volume, incubating overnight at 4 degrees C, filtering the solution to remove the insoluble substances, and obtaining an ursolic acid crude product; (iii) washing the oleanolic acid crude product with pure water, dissolving the insoluble substance in anhydrous ethanol, adjusting the pH value to alkaline, decoloring the solution by adding activated carbon, filtering the solution, adjusting the pH value of the filtrate to acidic, separating out a precipitate, boiling the precipitate in alkaline water, filtering the solution for 2-3 times, boiling the insoluble substances in pure water, filtering the hot solution to obtain a water-washed product, dissolving the water-washed product in anhydrous ethanol, decoloring the solution with activated carbon, filtering the solution, adjusting the pH value of the filtrate to acidic, separating out the precipitate, and washing the precipitate with distilled water to obtain high-purity oleanolic acid; and (iv) washing the ursolic acid crude product with sodium hydroxide (1%), then washing the crude product with pure water, consequently recrystallizing the crude product for 2 times using anhydrous ethanol, and recrystallizing the crude product using a methanol-ethanol mixed solution or an ethanol-acetic acid mixed solution to obtain high-purity ursolic acid.