Formula and preparation method of medicine for treating and preventing internal arteriovenous fistula dysfunction

The invention relates to the technical field of medical medicines, and discloses a formula and a preparation method of a medicine for treating and preventing the arteriovenous fistula dysfunction. The formula comprises the following raw materials: safflower, garden balsam stem, pericarpium zanthoxyli, radix salviae miltiorrhizae, herba asari, chitosan, a proper amount of clear water, a proper amount of acetic acid and a proper amount of glutaraldehyde aqueous solution. According to the invention, the safflower, the garden balsam stem, the the pericarpium zanthoxyli, the radix salviae miltiorrhizae, the herba asari and the chitosan are added into the medicine, wherein the safflower, the garden balsam stem, the pericarpium zanthoxyli, the radix salviae miltiorrhizae and the herba asari have the effect of promoting blood circulation to remove blood stasis, the chitosan is a glucosamine polycondensate obtained after deacetylation of a natural product chitin and has the effects of cell repair, tissue regeneration