The article reveals the peculiarities of criminological characteristics of professional criminals. It is indicated that professional criminals have deliberately chosen criminal activity as a tool to meet their material needs. The main motive of a professional criminal is profit, which is based on improving the material standard of living and obtaining a constant income from criminal activity. It is established that professional criminals are a group of the most dangerous and active criminals who deliberately oppose themselves to society and have a significant deformation of the value and normative sphere. The personality of a professional criminal is characterised by systematic anti-social behaviour and the commission of homogeneous crim...