Quality control method of policresulen vaginal suppository

The invention relates to a quality control method of policresulen vaginal suppository, in particular to a quality control method of policresulen vaginal suppository. The method comprises the step of determining the content of resorcinol-4-sulphonic acid, the content of resorcinol-6-sulphonic acid, and the content of m-cresol-4-disulfonic acid in the policresulen vaginal suppository by using efficient liquid chromatography. The invention further relates to the step for determining the content of a policresulen dimer in the suppository by using the efficient liquid chromatography. According to the method disclosed by the invention, the product quality can be effectively controlled.