The invention discloses a Chinese medicine preparation for preventing and treating postpartum hypogalactia of sow. The Chinese medicine preparation is mainly prepared from the following raw materials in parts by weight: 30-50 parts of caltrop, 16-24 parts of rhizoma curculiginis, 20-32 parts of suberect spatholobus stem, 8-16 parts of sealwort, 6-12 parts of lance asiabell root, 12-22 parts of folia perillae acutae, 10-20 parts of cottonrose hibiscus and 14-28 parts of caulis aristolochiae manshuriensis; all the components are pretreated and then subjected to solid fermentation by using a mixed culture to obtain the finished product. The product is scientific in formula, rigorous in process and suitable for industrial popularization; the product is capable of effectively treating postpartum hypogalactia of the sow and improving lactation yield of the sow.