The invention relates to a prebiotics polysaccharide feed for livestock. Feed material is fermented under the effect of mixed bacteria at least comprising two of bacillus, saccharomycete, lactobacillus, Geotrichum candidum Link and aspergillus niger. The weight part of the mixed bacteria is 0.2-0.4. The proportion by weight of each component in the feed material is as follows: 750 to 800 parts of corn flour, 130 to 160 partsof soybean meal, 30 to 60 parts of cottonseed meal, 2 to 5 parts of edible salt, 8 to 12 parts of calcium hydrophosphate, 2 to 4 parts of brown sugar, 3 to 5 parts of sirup, 800 to 1000 parts of water and 0.2-0.4 part of Chinese herbal medicine additive which is a powder stirred after crushing and mixing 30 parts of Astragalus mongholicus, 30 parts of Rhizoma Atractylodis Macrocephalae, 20 parts of Codonopsis pilosula, 30 parts of Poria cocos, 30 parts of Rhizoma alismatis, 30 parts of root of red-rooted salvia, 30 parts of fructus forsythia, 20 parts of cassia twig, 20 parts of radix bupleuri and 30 parts of liquorice by weight part. The invention also provides a method for producing the prebiotics polysaccharide feed.