The invention provides a method for treating post partum fever of cows by Chinese medicaments. The Chinese medicaments comprise 50g of ephedra herb, 50g of platycodon root, 50g of cassia twig, 60g of indian buead, 60g of dahurian angelica root, 30g of ginger, 60g of szechuan lovage rhizome, 80g of tangerine peel, 70g of Chinese angelica, 60g of peony, 50g of membranous milkvetch root, 100g of liquorice, 300g of indigowoad root, and 50g of szechwon tangshen root. The Chinese medicaments are all combined in proportion, put into a big iron pan, soaked by 3,000 milliliters of warm water for 25 minutes, decocted by big fire until 2,000 milliliters of decoction is left, and then decocted by slow fire; when 1,500 milliliters of decoction is left, the fire is stopped, dregs are removed, and the decoction is taken out; and the cows are poured with 750 milliliters of the decoction twice a day, and 3 days are taken as a course of treatment.