The invention relates to a Chinese medicinal preparation for treating pospartum constipation. The Chinese medicinal preparation consists of the following raw materials by weight: 75-250g of Chinese angelica, 100-250g of fructus cannabis, 100-250g of rehmannia, 30-100g of aloe, 50-250g of motherwort herb and 50-250g of honey. A preparation method of the Chinese medicinal preparation comprises the following steps of: preparing aloe fine powder for later use; adding 70 percent ethanol into coarse powder of Chinese angelica and fructus cannabis in an amount of six times that of the total weight of the coarse powder, reflowing twice, every time for 1.5 hours, mixing extracting solutions, filtering, recovering ethanol, and concentrating into thick paste; and adding water into rehmannia and motherwort herb in an amount of eight times that of the total weight of rehmannia and motherwort herb for decocting twice, every time for 1.5 hours, mixing decoctions, filtering, concentrating a filtrate till the ratio of a medicinal material to clear paste is 1:1, adding ethanol till the ethanol content is up to 60 percent, stirring uniformly, standing over night, filtering, recovering ethanol from the filtrate under reduced pressure, concentrating into thick paste, mixing with the alcohol extraction thick paste, adding aloe fine powder, honey and an appropriate amount of auxiliary material, mixing uniformly, preparing into particles, and drying. The Chinese medicinal preparation has definite curative effects on symptoms such as postpartum loss of blood of a lying-in woman, deficiency in body fluid and constipation.