The aim of presented research is to study the exterior features and the morphological and functional parameters of the udder of primiparous cows of Holstein and Simmental breeds in the herd SLL "Strapit", Kalarash. Research carried out on Holstein primiparous cows (n = 19), Simmental (n = 22) of the Austrian origin. In order to establish the main features of the exterior of the body measurements were taken basic body measurements and defined physique indexes. As a result of research it was established that primiparous cows of Holstein breed is well defined type of dairy cattle, confirming their proportional physique shape, the development of the middle part of the body, strong bone. Simmental primiparous cows for measurements the height at the withers by 3.3% and in the sacrum by 1.2% exceed the minimum requirements of the standard. Chest well developed in depth, wide enough, which is characteristic for the Simmental. Udder of primiparous cows of Holstein breed differs bulkiness, with the developed portions, advantageously tightly attached. Visually, the external structure of the udder of these animals differs by a greater extent along the belly and enough depth than at heifers of Simmental breed.