The invention discloses a preparation method of a traditional Chinese medicine composition for removing impurities by using a ceramic membrane. The preparation method comprises the following steps: adding water into herba schizonepetae, soaking the herba schizonepetae, heating the herba schizonepetae until the herba schizonepetae is boiled, carrying out heat preservation, collecting volatile oil, preparing an inclusion compound from the volatile oil, and and subjecting dregs and residual liquid to standing for later use; adding 60-80% ethanol into cicada slough, radix scutellariae, earthworm, radix asteris, radix stemonae and fructus chebulae, performing reflux extraction and filtering, performing ultrafiltration on an alcohol extract by adopting the ceramic membrane, and concentrating a filtrate; combining alcohol extraction dregs with fineleaf schizonepeta herb dregs, residual liquid and stiff silkworms, adding water for decoction, carrying out filtering, performing microfiltration on water extract by using the ceramic membrane, and concentrating a filtrate under reduced pressure; mixing the alcohol extract and the water extract to obtain a thick extract, adding dextrin, performing vacuum drying, crushing the dry extract, supplementing the dextrin, adding a proper amount of an adhesive, namely an ethanol solution, performing granulation, and performing drying; and adding the clathrate compound into the particles, and conducting uniform mixing. According to the invention, the index component baicalin with curative effect is enriched, and the extract yield of the extract can be obviously reduced. Meanwhile, the viscosity of the extract is improved, a preparation is easy to form, and a dissolving solution of the preparation is clear and transparent.