Sinkiang arnebia root-honeysuckle flower-red paeony root-Chinese arborvitae twig soup for treating allergic purpura

The invention relates to the field of medicament formulas, in particular to sinkiang arnebia root-honeysuckle flower-red paeony root-Chinese arborvitae twig soup for treating allergic purpura. The soup is characterized by consisting of the following bulk pharmaceuticals in percentage by weight: 5-8 percent of inkiang arnebia root, 8-11 percent of honeysuckle flower, 7-9 percent of red paeony root, 5-7 percent of Chinese arborvitae twig, 5-7 percent of tree peony bark, 4-6 percent of crude rehmannia, 4-6 percent of fineleaf schizonepeta herb, 3-6 percent of divaricate saposhnikovia root, 3-6 percent of figwort, 5-7 percent of dwarf lilyturf root, 3-5 percent of Chinese atractylodes, 8-11 percent of cogongrass rhizome, 4-7 percent of red-rooted salvia root, 2-4 percent of liquoric root, 2-4 percent of pseudo-ginseng root powder, 6-9 percent of paniculate swallowwort root and 4-7 percent of lightyellow sophora root. A preparation method of the soup comprises the following steps of: packaging pseudo-ginseng root