Objective To specify optimize process of wrapping volatile oil from white atractylodes bhizolne and myristica fragrans. Methods The L9 (3^4)orthogonal test was used to select the wrapping process; and the utilization ratio of the oil was used as evaluating targets in the test. Result The best condition was that tile ratio of β-CYD and oil was 6:0.5 with the temperature at 60℃. Conclusion the process is good for the stability of the volatile ...