Objective: To establish preparation technology of Qige oral liquid. Method: With the content of astragaloside iv as evaluatiom index

optimum preparation technology was optimized by orthogonal design test and single factor test. Result: Optimum technology was:extracted 2 times with 8 times the amount of water for 2 h each time

the concentration of ethanol precipitation was 60%

Tween-80 was used for solubilizing volatile oil. Conclusion: Water extracting technology and refining process of Qige oral liquid met production technology requirement.