Objective: To optimize extraction and inclusion technology of volatile oil from Aifu Nuangong capsule. Method: With soaking time

extraction time and the amount of water as investigating factors

yield of volatile oil as index

orthogonal test was used to optimize extraction technology of volatile oil.With ratio of volatile oil-cyclodextrin

inclusion temperature and inclusion time as investigating factors

composite score of inclusion yield and inclusion ratio as index

orthogonal test was used to optimize inclusion technology of volatile oil

and inclusion compound was identified. Result: Optimized extraction technology was:powder was soaked 1 h with 8 times the amount of water

extracted 7 h.Optimized inclusion technology was:ratio of β- CD and volatile oil was 8∶1

inclusion temperature was 50 ℃

inclusion time was 1.0 h. Conclusion: This optimized technology was feasible with high yield

it could be suitable for large-scale production.