The invention discloses water-soluble nut oil microcapsules rich in 
Omega-7 and a preparation method of the water-soluble nut oil microcapsules rich in 
Omega-7. The water-soluble nut oil microcapsulesrich in 
Omega-7 are prepared through the steps of by using Omega-7 components in macadimia nut oil, which are enriched through a supercritical CO2 
fractionating column device, as a core material, performing embedding with a 
capsule material, performing emulsifying with an emulsifying agent, performing high-pressure micro jet homogenizing treatment, and then performing spray freezing and 
drying toobtain microcapsule 
powder; and performing packing with opaque medical hollow capsules so as to obtain a macadimia nut oil microcapsule product rich in Omega-7. The macadimia nut oil microcapsules are rich in Omega-7 components, and have multiple advantages of being good in water 
solubility, good in absorption properties, high in stability and the like. The microencapsulated products can preventthe Omega-7 from being oxidized and disintegrated, original 
efficacy characteristics can be maintained easily, the problems that unsaturated fatty acids are easy to oxidize and difficult to store, pack and transport, the macadimia nut oil is low in 
processing degree and 
utilization rate, and the economy added value is low, are solved, and the product competition force and the added value are increased. The preparation method is simple and easy to operate, and industrialization is easy to realize.