The invention relates to 
mixed feed for preventing 
diarrhea of 
weaned piglets and a preparation method thereof. The 
mixed feed is prepared from the following raw materials in parts by weight: 20 to 40parts of corns, 10 to 20 parts of baken and flaked corn, 5 to 15 parts of whey 
powder, 5 to 15 parts of bean pulp, 5 to 8 parts of expanded soybean, 1 to 5 parts of fermented soybean pulp, 5 to 10 parts of skim milk 
powder, 1 to 5 parts of saccharose, 0 to 5 parts of 
plasma protein powder, 1 to 1.5 parts of 
organic compound acidifier, 0.1 to 0.4 part of a organic mineral premix, 0.1 to 0.8 part of mountain flour, 0.1 to 1.5 parts of 
calcium hydrogen phosphate, 0.3 to 1.5 parts of compound 
amino acid, 0.1 to 0.4 part of table salt, 0.05 to 0.3 part of 
choline chloride, 0.02 to 0.05 part of a 
vitamin premix, 0.05 to 0.2 part of a complex 
enzyme preparation, 0.05 to 0.1 part of 
glutamine, 0.1 to 0.2 part of 
glycerol monobutyrate, 0.1 to 0.3 part of a Chinese herbal 
medicine preparation, 0.03to 0.1 part of probiotics and 0.05 to 0.5 part of a 
mildew preventive. The 
mixed feed disclosed by the invention is capable of effectively increasing the feed intake, increasing the digestibility ofthe mixed feed, helping repair intestinal functions of piglets and build a normal intestinal microflora, effectively relieving or avoiding the 
diarrhea of early-
weaned piglets, reducing a 
diarrhea rate and a death rate and realizing rapid growth of the piglets.