Objective To explore the common volatile constituents in Xiongma decoction and rhizoma chuanxiong and rhizoma gastrodiae. Methods The volatile constituents in rhizoma chuanxiong and rhizoma gastrodiae and Xiongma decoction were determined with the method of GC-MS, and their relative contents were measured with peak area normalization method. Results There were 60, 23 and 76 volatile constituents in rhizoma chuanxiong and rhizoma gastrodiae and Xiongma decoction respectively, 27 common volatile constitution in Xiongma decoction and rhizoma chuanxiong, 7 common volatile constitution in Xiongma d...