Special grease base oil for functional food as well as preparation method and application of special grease base oil

The invention discloses special grease base oil for a functional food as well as a preparation method and application of the special grease base oil. The special grease base oil is formed by performing ternary ester exchange on medium-carbon-chain glyceride, high-melting-point fat and linolenic acid grease, and performing ternary ester exchange on the medium-carbon-chain glyceride, the high-melting-point fat and the linolenic acid grease under the conditions of temperature and stirring intensity by taking lipase as a catalyst, so as to obtain the special grease base oil for the functional food in one step. The special grease base oil for for the functional food is wide in melting range, can remarkably improve in-vivo glucose and lipid metabolism disorder, balance and supplement in-vivo necessary and functional fatty acids and quickly supplement energy, can meet the requirements of consumers, particularly, dietary and nutritional requirements of patients with metabolic syndromes such as overweight, obesity, fa