The utility model provides a cough syrup pharmaceutical wastewater advanced treatment system. The water treatment system can be used in advanced treatment of cough syrup pharmaceutical wastewater treated by an integrated device, and mainly comprises a water collecting tank, a volcanic rock reactor and a ceramic membrane reactor. A volcanic rock filter material is adopted as the filling material of the volcanic rock reactor, and a microporous ceramic membrane is the main reaction element of the ceramic membrane reactor. The cough syrup pharmaceutical wastewater advanced treatment system solves the problem that the cough syrup pharmaceutical wastewater treated by the integrated device cannot reach the standard for emission, has the characteristics of good treatment effect, low investment expense, stable operation and the like, and can effectively remove pollutants such as COD, BOD5, SS, ammonia nitrogen and the like in the cough syrup pharmaceutical wastewater.