The invention discloses a green biological active feed, which relates to the technical field of feeds. The green biological active feed is prepared from the following materials in part by weight: 40 to 80 parts of 
straw, 5 to 30 parts of corn four, 5 to 25 parts of cake dregs, 5 to 25 parts of wheat 
bran, 0.1 to 0.2 part of complex 
bacteria and 0.1 to 0.2 part of complex 
enzyme. During preparation, the 
straw is crushed and then is uniformly mixed with the 
corn flour, the cake dregs and the wheat 
bran; the complex 
bacteria and the complex 
enzyme are mixed into the mixture; water is added into the mixture to ensure that the 
water content reaches 45 to 50 percent, and the mixture is filled in a big tank, sealed and stored for later use; or the mixture is baked or dried by natural wind for storage and later use. The green biological active feed has the following advantages of: (1) improving the balance of intestinal 
flora, and improving the feed 
utilization rate; (2) promoting the growth of meat 
livestock and poultry, and shortening the breeding cycle; (3) strengthening the body conditions of laying hens, ducks and geese, and having a significant strengthening action on prolonging theegg-laying peak period; (4) strengthening the 
body condition of female domestic animals, and improving the yielding rate; (5) strengthening the body conditions of the 
livestock and poultry, enhancingthe 
disease prevention and 
disease resisting capacities, and reducing the sickness rate; and (6) purifying the 
culture environment, and improving the meat quality due to no public nuisances and no residues.