The theme of this thesis is a design of a lifter with a double parallel lever system. The purpose od the lifter is lifting cargo of 1 tone on the height od 1 meter. Parameters are platform dimensions of 2m x 1m, speed of lifting 10 m/min and hydraulic drive. Some of the requirements are: platform of the lifter must stay horizontal during lifting which allows safe transport of the cargo, then the compactness of the construction need to be as good as posible and hydraulic force as small as possible. The introduction gives consideration of the various types of lifting platforms with different purposes and conditions that are on the market. After introduction conceptual solutions of different lifters are presented and optimal solution for the given parameters is selected. Then the loads on the lifting parts are calculated. With the calculated loads, all critical parts of the structure were checked: hydraulic cylinder, gears, levers, pins and welds. Excel software package were used to define loads in the relation of the position of the angle of levers, all the graphs were made in the Excel. 3D model of the lifter was made in the Solidworks sotfware package and a technical documenation based on it