The invention relates to a Chinese traditional medicine powder for treating livestock diarrhea and a method for preparing the same, and is characterized in that the Chinese traditional medicine powder comprises the following components by weight: 20 to 60 grams of Chinese pulsatilla root, 20 to 50 grams of rhizoma coptidis, 10 to 40 grams of amur corktree bark, 10 to 40 grams of gentiana, and 20 to 50 grams of ash bark. The method comprises the following steps: weighing each of the Chinese traditional medicines respectively, drying and grinding the Chinese traditional medicines in a fluid bedtype micronizer until the particle diameter is between 10 and 20 microns; screening the powder through a 1,000-mesh sieve; mixing the powder evenly in a mixer; and packaging the powder. The Chinese traditional medicine powder has the advantages of improving the transportation and digestion functions of spleen and stomach, and strengthening the spleen by eliminating dampness so that the water dampness can be transported and digested to further restore the functions of the spleen and the stomach and give play to the functions of transporting and digesting water dampness, and the like, and then the diarrhea can be stopped automatically; besides, the medicine powder is warm in nature, and has the efficacies of lubricating the intestines, stopping the diarrhea, hemostasis and regenerating tissues; on the one hand, foreign matter stimulation is reduced; and on the other hand, inflammatory exudates are adsorbed so that the inflammation is relieved to achieve the aims of drying damp and strengthening spleen, clearing away heat and toxic material, and stopping the diarrhea.