The invention relates to the technical field of animal feeding, in particular to a complete pellet feed for improving the production performance of the Shabei white cashmere goat, a preparation methodthereof and an application thereof, and the feed meets the requirements for growth and production of goats. The feed includes corn, sprayed corn husk, wheat bran, alfalfa meal, soybean meal, cotton meal, soybean hull, apple pomace, sunflower shell, ruminant yeast, guanidinoacetic acid, stone powder, sodium bicarbonate, sodium chloride, sodium sulfate, coated methionine, lysine, a mildew inhibitor, a sweetener, xylooligosaccharide, a complex enzyme preparation, a trace element additive and multivitamin. The method combines trace elements and vitamins, adds xylooligosaccharides, promotes the absorption of trace elements and vitamins by goats, and accelerates the speed of goat cashmere and improves the quality of cashmere production. The granulation optimization is carried out during preparation, the feed conforms to the feeding habit of the Shanbei white cashmere goat, and sodium sulfate and coated amino acid are added, and the feed can directly used for feeding the goat instead of an original mixed feeding method of a concentrate supplement feed and a roughage.