The frequency and incidence of breast feeding in the region of Vojvodina was analyzed and the development trend of breast feeding was also followed. The paper points out the most important advantages of breast feeding which make human milk the unique food for infants. The material consists of a group of 707 children of the age of 2 to 24 months from the territory of Vojvodina. A semiquantitative poll on nutrition supplied the facts which were computerly processed and presented in tables and graphs. The findings differ somewhat when a subgroup of children on dual-type nutrition (the milk of the mother and another type of milk) was included regarding the term human milk feeding. At the end of the age of one month 77.8% of infants are on breast feeding, although 92.6% get human milk; at the age of three months this amounts to 46.4% in other words to 63.2%. A marked decrease in breast feeding--an abrupt ablactation occurs in the fourth month, and only 30.3% of the subjects remains to be breast fed. The breast feeding trend is followed through mutual curves, with the singling out and presenting of extremes. The linear trend model is given separately for two environments. The segment angle which designates breast feeding i.e. the representation of human milk in daily nutrition clearly differs in the presented samples. The findings are compared with the statements of other authors.(ABSTRACT TRUNCATED AT 250 WORDS)