The book "Elements of modeling the working process of bulb and tuber diggers" is an original work in which the author presents his vision on the mathematical modeling of some elements of the technological flow of this category of agricultural machines. Chapter 1 presents the modeling of the material flows variation along the technological flow of the bulb and tuber diggers as well as the way of estimating the material loading of the different working organs of these machines structure. Chapter 2 deals with the modeling of the functioning of the impurities cleaning systems equipped with elliptical shaking rolls, on the basis of which have been made algorithms of calculation and computer programs in order to optimize the working process of this category of working organs component of the bulb and tuber diggers. The book is intended for agricultural engineers researchers and engineers as well as teachers and students in this field.