The invention discloses a method for producing complete feed for cattle and sheep through secondary fermentation with sugarcane tips as the raw material. The complete feed for cattle and sheep is prepared from, by weight, 50-85 parts of plant tips, 25-35 parts of plant materials, 8-10 parts of corn flour, 5-8 parts of rice bran, 3-5 parts of bean pulp, 0.1-1 part of a fermentation strain and 0.1-0.3 part of microelements, wherein the plant materials include one or a mixture of two or more of sugarcane tips, fresh forage grass, corn stalks, wheat stalks, rice straw, paper mulberry, corncobs, kudzu vines, peanut vines and weeds. According to the method, the commercial crop byproduct sugarcane tips are fermented to prepare the feed for cattle and sheep, the project of turning waste into wealth is implemented, no waste residue is discharged, and environmental friendliness is achieved; the making method is simple and low in cost, and the feed, obtained after fermentation, for cattle and sheep is comprehensive in nutrition, has a fragrant and sweet taste and improves the appetite of cattle and sheep, and cattle and sheep like to eat the feed and grow fast.