The invention belongs to the technical field of beef cattle fattening, particularly relates to a beef cattle fattening feeding method, and aims to solve the problems that beef cattle are very easy to get sick and the breeding benefit is not high due to the lack of the existing beef cattle feeding and management technology by farmers, the following scheme is provided: the method comprises the following steps: S1, selecting a proper site to build a cattle house; s2, selecting a proper cattle breed; s3, isolated feeding; s4, beef cattle fattening; and S5, breeding management: in the step S1, an environment with high terrain, good ventilation and good daylighting is selected to build a cowshed, a free site is built behind the cowshed, daylighting and cowshed drying are facilitated, and in the step S2, 3-6-month-old beef cattle which are uniform in structure, thick and strong in four limbs, long in body, wide in back and good in fur luster are selected. The beef cattle breeding method is convenient to operate, a good and comfortable environment can be provided for beef cattle, the sickness probability of the beef cattle can be reduced, the growth speed of the beef cattle can be increased, and breeding benefits can be improved.