A method to stack palletless and as to their size variable packages (1) on warehouse rack (15) and to retrieve them from said rack and to control the logistics of packages, in which method the said warehouse rack is furnished with an automatic packages stacking and retrieving robot, and in the method the control of warehouse data and logistics takes place by means of a data system. Equipment (5) included in the method receives package (1), for instance, onto conveyor belt (2), equipment (5) carries out weighing of package (1), determination for it necessary space requirement, reading of remote code connected to package (1), as RFID code (20) in order to choose the rack space determined for it on basis of previous functions, and package (1) is retrieved from the rack steered either by the order of the user or of the data system, and the data from above mentioned stacking and retrieving functions are transmitted to the data system.