This invention relates to a kind of preparing method of a medical ointment for psoriasis. It uses a definite proportion of natural indigo, white dittany bark, fresh pepertree, coptis root, rhizome of wind-weed, and black sesame seed, to be mixed up and pulverized, and after fryed by vegetable oil, to be poured into a container with openings both on it's top and bottom. Then the top and bottom openings of this container are to be sealed with cereals and fresh tree branches, placed still for more than one days, and cereal shells are to be burned at the lower opening of the container. The ointment drops off from the seam of the lower opening will be the medical ointment for psoriasis prepared by this invention. This ointment is reasonably prescribed with high suring rate and low recurring rate, without toxicant, could be applied safely with no deleterious effect. |