Abstract:This article uses black tea powder，rose powder，and fermented milk as raw materials，and determines the technical parameters of bactericidal black tea and rose fermented milk drinks through single factor experiments and response surface optimization experiments.The results showed that the mixed powder of black tea powder and rose powder （mass ratio 1∶1）was added at a rate of 3.8%，fermented milk base material was added 42%，white sugar was added 8% ，stabilizer was added 0.53%，and the pH value of the product was adjusted to 4.2，the product has the unique aroma of black tea and roses，with a delicate taste，pleasant acidity and sweetness，without layering or sedimentation，and a high sensory score.