The invention relates to a preparation method of feed for brocarded carps. The feed is prepared by the following raw materials in percentage by weight: 22-26 white fish meal, 8-10 trash fish meal, 3-5 green worm meal, 8-12 freshwater shrimp meal, 6-8 pork powder, 3-5 milk powder, 4-6 vegetable protein powder, 4-6 animal protein powder, 3-9 bone meal, 2-5 nutgrass flatsedge powder, 1-3 malt meal, 2-5 phellodendron bark powder, 1-3 honeysuckle flower powder, 2-5 cassia seed powder, 1-3 cordate houttuynia meal, 4-6 expanded powder and 3-6 soybean protein powder; and the powders are taken according to a certain proportion and all put in an agitator to be stirred for 180 min, the mixture is taken out and then put in a crusher to be crushed into 0 mesh of powder, then the powder is taken out and then put in a direr for drying, then put in the agitator to be stirred and then taken out and put in a bulking machine for bulking at the temperature of 80-85 DEG C for 2-3h, the dryness of the bulked powder is controlled between 90 percent and 95 percent and the bulked powder can be packaged according to the specific gravity after being taken out to cool.