The invention discloses nutritional feed suitable for piglets and a preparation method of the nutritional feed. The nutritional feed suitable for the piglets is prepared from the following raw materials : hulled corns, puffed wheat, a granular premix, puffed soybean meal, fermented soybean meal, steamed fish meal, whey powder, sucrose, glucose, monocalcium phosphate, table salt, choline chloride,zinc oxide, lysine, threonine, methionine, tryptophan, a compound acidifier, a vitamin premix, an antioxidant, beta-mannase and lactic acid bacteria. The nutritional feed is prepared through the following steps: S1, preparing basic powder; S2, preparing a powdery premix; and S3, stirring and mixing the powdery premix with the granular premix, beta-mannase and lactic acid bacteria at the room temperature so as to obtain the nutritional feed suitable for the piglets. Through the nutritional feed, the problem existing in the prior art that conventional feed is not suitable for the imperfect physique of the digestive system, the micro-ecological system and the immune system of the piglets is solved.