The invention relates to the method of producing of fermented, pro-healthy fruit beverages as replacers of fermented milks – especially in nutrition of persons following the special elimination diets, particularly that require elimination of animal proteins and/or lactose, therein the fruit preparation of content 25-98% by weight of fruit purée, containing 8-12% by weight of extract, 1-6% by weight of disaccharide not lactose, 0.0- 0.3% by weight of sodium citrate dihydrate, of p H no less than 5.0, is inoculated with the starter monoculture of Lactobacillus plantarum strains: KKP 2025p or KKP 2026p, or Lactobacillus paracasei ssp. paracasei KKP 2027p strain, in quantity 0.001-0.01% by weight of concentrated lyophilized culture, conducing the fermentation to p H no higher than 4.6, and then to the fermentation product, possibly a supplement is introduced in the form of concentrated lyophilized Bifidobacterium culture, preferably Bifidobacterium breve KKP 2028p strain or Bifidobacterium infantis KKP 2029p, in quantity 0.01-0.1% by weight.