The invention discloses a method for measuring the content of total triterpene in a solid dispersion of a traditional Chinese medicine triterpenoid effective part extract. The method of the invention adopts a mixed-solvent method, i.e. a methanol or ethanol-ether mixed-solvent method and a methanol or ethanol-ethyl acetate mixed-solvent method, and comprises the following steps: damaging the solid dispersion structure of a preparation by utilizing a small amount of methanol or ethanol, exposing the triterpenoid from the solid dispersion structure, then adding an organic solvent,i.e. ether or ethyl acetate which dissolves the triterpenoid but does not dissolve povidone K30 and lactose, and depositing the povidone K30 and the lactose, wherein the triterpenoid can dissolve in the methanol orethanol-ether and the methanol or the ethanol-ethyl acetate mixed solvent, thereby excluding the interference of auxiliary materials of the povidone K30 and the lactose on measuring the content of the triterpenoid. Shown by experiments, the content measuring method of the invention has good repeatability, high degree of accuracy and good linear relationship, and can be suitable for measuring the content of the total triterpene in the triterpenoid effective part extract or the preparation thereof.