The invention discloses a traditional Chinese medicine type medicinal bath solution for mink farming and a preparation method thereof. The traditional Chinese medicine type medicinal bath solution is prepared through the following raw materials: houttuynia cordata, adiantum edentulum Christ, cortex phellodendri, moutan bark, bark of Chinese catalpa, camellia olelfera abel residue, spinach beet, dandelion, fructus cnidii, patience dock root, radix ampelopsis, rhizoma paridis, ploygonatum cirrhifolium root, symplocos paniculata, chloranthus serratus, radices lithospermi, caulis trachelospermi, dalbergia odorifera, pulvis fumi carbonisatus, elephant hide, liquorice, vinegar, simmondsia chinensis seed oil, olive oil and triglycerol stearate emulsion. According to the traditional Chinese medicine type medicinal bath solution, the raw materials are pure natural Chinese herbal medicines and exclude any chemicals or antibiotics; a mink can be protected from suffering from various skin diseases; the traditional Chinese medicine type medicinal bath solution is convenient to use, and good in effect.