Chuanwu and Caowu belong to the aconite class of drugs, there is a large toxicity, the external application of the drug need to be powdered and applied to the affected area, the dosage of external use, need to be based on the condition of the doctor, can not be generalized, it is recommended to consult a doctor. Chuanwu and Caowu have the efficacy of dispelling wind and dampness (removing wind and dampness from the body), warming menstruation and relieving pain. They are mainly used for the treatment of wind-cold-dampness paralysis (paralysis of the limbs caused by wind, cold and dampness), joint constriction (spasm and convulsion of the body due to the feeling of wind-cold), cold pain in the heart and abdomen (cold pain at the location of the heart, mouth and abdomen), and cold hernia and abdominal pain (acute abdominal pain caused by deficiency and coldness of the internal organs and the feeling of wind-cold from the outside), etc. They are very toxic and can be used to relieve pain. Aconite drugs are very toxic, general use needs to be concocted after a long time to remove the toxicity of the decoction, raw products for external use can only be used in moderation, according to the specific conditions decided. It should be noted that pregnant women should be cautious; should not be used with half-summer, piper betel, piper betel, piper betel, smallpox pollen, Chuanbeimu, Zhebeimu, Pingbeimu, Ybeimu, Hubei Beimu, Ampelopsis, Baihe and the same use. Taking this medicine needs to be under the guidance of a doctor.