FIELD : nanotechnology.SUBSTANCE : invention relates to nanotechnology, medicine and food industry. Method of obtaining eucalyptus dry extract nanocapsules is characterized in that dry eucalyptus extract is added to a suspension of sodium alginate in butanol in the presence of 0.01?g of glycerol ester with one or two edible fatty acid molecules and one or two citric acid molecules as a surfactant with stirring at 1000 rpm, then refrigerant 112 is poured, the resulting nanocapsule suspension is filtered and dried at room temperature, while the core : shell mass ratio is 1 : 1, 1 : 2 or 1 : 3.EFFECT : method for obtaining nanocapsules of eucalyptus dry extract is proposed.1 cl, 3 ex