Based on the studies, the main factors that affect the quality indicators of hemp seeds harvested by a combine harvester are identified. It was established that in the process of harvesting hemp seeds with a combine harvester, the bunker masa has high humidity, which affects their heating. Higher humidity of the bunker mass belongs to impurities, which exceeds the similar indicator of seeds by two and more times. To prevent the process of warming the seeds, it is necessary to stomp insignificant indicators of clogging of the bunker mass and minimize the time of its filling, transportation to the processing and primary cleaning point. Removing the main part of the impurity during initial cleaning allows to reduce the moisture content of the seed mass by two or more percent, depending on their content. When carrying out the process of drying hemp seeds, it is necessary to maintain the acceptable temperature of their heating for the corresponding values of humidity in order to maintain quality indicators while ensuring their flow movement or periodic mixing. When sorting hemp seeds, the selection of the highest quality fraction of them is ensured for subsequent use in different directions.