Objective: To optimize spray srying technology conditions of compound Shaji granules. Method: With moisture content and moisture absorption rate as index

type and dosage of accessories were investigated by single factor test;With composite score of total flavonoids content

moisture content and flour yield as index

orthogonal test was used to optimize spray drying process with relative density

inlet air temperature and feed rate as factors. Result: Relative density of extract and inlet air temperature had significant effec on spray drying process.Optimum technology conditions were as followings:relative density 1.02(25℃)

inlet air temperature 100-110℃

feed rate 22 mL·min-1

forming rate of granules 32%. Conclusion: This optimized drying technology was stable and feasible

it could be used in industrial production.