The invention relates to an external 
medicine for curing lepriasis old ulcerative 
erosion as well as burns and scalds, which belongs to the technical field of traditional Chinese medicines. The external 
medicine mainly comprises the following bulk drugs according to weight parts: 25-35 of pearl 
powder, 5-15 of 
panax pseudoginseng, 5-15 of 
cactus and 3-8 of 
coptis root, and the bulk drugs are prepared, respectively crashed, screened by 250-mesh 
sieve, mixed and evenly stirred to produce medicinal powders. When the external 
medicine is used, 
carrion at an ulcerative point is firstly cleaned, the medicinal powders are then directly spreaded on a wound of the ulcerative point, and the wound is cleaned and the medicine is changed once a day till the wound complete heals. The medicine has 
pink color, faint scent, pungent, mild, bitter property and 
flavor as well as 
toxicity, has the functions of clearing away heat and toxic materials, eliminating dampness and diminishing swelling, draw out pus by applying a plaster to the affected area, reliving pain and repelling insects, promoting circulation of blood and activating 
blood circulation as well as healing wound and promoting 
granulation, is suitable for curing lepriasis old ulcerative-point 
erosion and burns and scalds of ordinary persons and has good healing 
efficacy, fast healing effect and no 
scars after healing.