The invention relates to microencapsulated kiwi fruit ultramicropowder and a preparation method thereof. According to the method, kiwi fruit subjected to peel and seed removal is microencapsulated and superfinely grinded; microencapsulating and superfine grinding processes are fused into a preparation process; in the same processing process, the kiwi fruit can be microencapsulated, superfinely grinded and powdered (juice). The microencapsulated kiwi fruit ultramicropowder is uniform and stable in color, basically keeps the original flavor, is low in nutrition loss, long in storage time, convenient to transport and use, good in dispersity and easy to digest and absorb, can be widely used as various food ingredients, functional food ingredients, special nutritional food and the like, and is especially suitable for making foods for olds, foods for children, beauty foods, nutritional healthcare foods, baked foods and the like.