Preparation method of Xinshenghua granule

The invention discloses a preparation method of a Xinshenghua granule. In the invention, effective components in a formula are subjected to specific enrichment on the basis of structure types, wherein alkaloid in herba leonuri is enriched through a purification method of ultra-filtration and nano-filtration; and organic compounds, such as flavones, saponins, phenolic acids, amygdalin and the like in flos carthami, peach kernels, rhizoma chuanxiong, angelica sinensis, radix glycyrrhizae and dry ginger are enriched by means of polyamide resin, and furthermore, the organic compounds are prepared through elution with ethanol in certain concentration and recovery. In large-scale production, volatile oil in angelica sinensis and rhizoma chuanxiong is difficult to extract and prepare, so that in the method, processes of preparing a distillation liquid through water vapor distillation, adding beta-cyclodextrin to the distillation liquid with stirring to perform inclusion, and performing nano-filtering concentration a