The invention relates to the technical field of functional health-care products, in particular to a high-energy meal replacement composition capable of reducing weight, and a preparation method and application of the high-energy meal replacement composition capable of reducing weight. According to the high-energy meal replacement composition capable of reducing weight, a camellia oil extract and fresh ginger essential oil are used as effective components, and the high-energy meal replacement composition capable of reducing weight is rich in unsaturated fatty acids, vitamin A, vitamin B, vitamin C, vitamin E, calcium, iron, zinc, carotene, and various trace elements beneficial to human bodies, so that during daily drinking, balanced nutrition is guaranteed; besides, the high-energy meal replacement composition capable of reducing weight has good oxygen enrichment capacity, can resist hypoxia and resist weariness, provides enough energy for the human bodies, and has the characteristics of being low in calorie and capable of generating continuous satiety; few high-energy meal replacement composition capable of reducing weight is eaten, but the high-energy meal replacement compositioncapable of reducing weight is nutritive and high in value, and the appetite and the calorie can be strictly and accurately controlled; and besides, the high-energy meal replacement composition capableof reducing weight is convenient to eat and contributes to health and reducing weight.