The invention discloses a method for preparing a dried mango and the prepared dried mango. The method includes selecting the mango which is eight-mature, free from decay, bruise and pesticide residueas a raw material, and performing cleaning, disinfection, rinsing, peeling, stone removal, dicing, blending, pulping, colloid milling, pan laying, quick freezing and freeze drying to obtain the driedmango. The dried mango has the advantages of low water content, crisp taste, convenience for eating and easy preservation, so that the dried mango is a product suitable for all ages. A composition ofthe product does not comprise sucrose, trehalose and oligosaccharides are specially added, so that the product has the functions of preventing tooth decay, adjusting intestinal flora of a human body,activating the proliferation of probiotics and inhibiting harmful bacteria, is beneficial to the absorption of trace elements by the human body, and is low in heat and suitable in sweetness. The product refines the mango by pulping, and mango dietary fiber is refined, such as mangoes, pineapples and the like, so that the taste of the product can be greatly improved, and the product is richer in nutrition and easier to digest and absorb.