It can be used externally to kill worms, attack toxins and astringent sores, and internally to dispel phlegm and eliminate stagnation, expel water and pass stools. External treatment can be used for ringworm, sores, scabies, polycarbonates, eczema, syphilis, etc., internal use for the treatment of phlegm and saliva stagnation, bowel movement is not favorable, edema and distension. Light powder is pungent, cold and toxic. It belongs to the large intestine and small intestine meridian. Appropriate amount for external use, powder mixing the affected area; internal 0.1 ~ 0.2g each time, 1 ~ 2 times a day, more into the pill or capsule service, gargle after service. It should be noted that this product is toxic, can not be used for a long time or overdose, internal use should be used with caution. Adverse reactions are not clear, pregnant women are forbidden to take. Do not use the drug on your own to avoid risk, if you are not feeling well, please go to the hospital and use the drug under the guidance of a professional physician.