FIELD : nanotechnologies.SUBSTANCE : invention relates to nanotechnology, medicine and food industry. Method for producing Reishi dry extract nanocapsules is characterized by that Reishi dry extract is added to kappa-carrageenan suspension in petroleum ether in presence of 0.01 g of glycerol ester with one or two molecules of edible fatty acids and one or two molecules of citric acid as a surfactant while stirring at 800 rpm, then acetone is added, the resulting suspension of nanocapsules is filtered and dried at room temperature, while the core : shell mass ratio is 1 : 1, 1 : 2 or 1 : 3.EFFECT : disclosed is a method of producing nanocapsules of dry extract of Reishi.1 cl, 3 ex