Chuanwu Aconiti Radix (Chuanwu) or Common Monkshood Mother Root is the dried mother root of Aconitum carmichaelii Debeaux, family Ranunculaceae. The main pharmacological studies of Aconiti Radix are anti-inflammatory, analgesic, immunosuppression and on cardiovascular system. Aconiti Radix total alkaloids, aconitine, mesaconitine, hyaconitine and 3-acetyl aconitine all have strong anti-inflammatory activity. They can reduce inflammation induced by various substances in animals. Aconiti Radix alkaloids have significant analygesic activity. Analgesic effect of 3-acetyl aconitine does not induce drug tolerance and drug dependent. Aconiti Radix alkaloids also have immunisuppression activity. Aconitine can induce arrhythmia, has local anesthetic effect and can block motor nerve. Pungent and bitter in flavor, hot in nature. Enter heart, kidney, and spleen channels. Expel wind-damp, disperse coldness and relieve pain.