Abstract:In this paper, 8 volatile oils obtained from Vitex negundo var cannabifolia (Sieb. et Zucc.) Hand-Mazz, V. negundo var. heterophglla (Franch.) Rehd., V. negundo L. Notopterygium incisium Ting., Alpinia officinarum Hance, Atractylodes lancea (Thunb,)DC., Pogostemon cablin Blanco and Acorus gramineus Soland, respedtively have been included with β-cyclodextrin. The inclusion conditions of the compounds and their regularities have been inuestigated. Changes in the composition and in the content of main components of each oil before and after inclusion have been determined by means of TLC qualitative analysis, GC and GC-MS. X-ray phase analysis has been used to test whether the inclusion powder has taken place