The article refers to the agricultural engineering and mechanization of agriculture, particularly to methods of ridges forming and designing the shaped work surface of hillers. The aim of the study is to design a working surface form of the hiller’s blade to form an air- permeable crests. This goal is achieved by the development of methods of designing the shaped work surface of the hiller. The article describes the sequence of design the shaped work surface of hiller. At the same time, we took into account the existing design techniques, taking into account the working conditions and terms of agronomic requirements, but also took into account the physical and mechanical properties of the soil, the conditions for the growth and development of the potato (and other cultures). The designed form of the working surface of the hiller’s blade forms an air - permeable crests with the least expenditure of energy and increases the yield by: lifting and crumbling of the soil, moving it up the dump, separation (screening) on a sieve placed between the legs and wings of solid blade, turning the soil to 90 ... 120 degrees, loosening the surface ridges and filling the weeds are in the protection area, the direction of erosive - the dangerous part (forming a crust on the ridges and increases its density) of the soil at the bottom of the furrow .