Extortion of property and robbery are one of the most dangerous crimes against property, as they do harm not only to property, but also to health, freedom and honour. The elements of property and violence make these crimes similar, so it is very important to find out the correlation and the possibilities of dissociation of these crimes. Therefore, in the first chapter of the work the development of Lithuanian legal acts, regulating extortion of property and robbery, is reviewed, also the conception of these crimes and relations with the other criminal offences are analysed. In the second chapter of the work, applying the literature on criminal law, materials from criminal cases and legal acts of Republic of Lithuania and foreign countries, the elements of extortion of property and robbery are researched in order to find out the similarities and differences between these crimes. Also the problems of qualification of the crimes are reviewed. Eventually, in the third chapter of the work the qualified features of extortion of property and robbery are examined. In findings the criteria that allow to distinguish extortion of property from robbery are formulated. As such criteria were recognized the object of the crime, nature of threat and time, when criminal is going to take the property and realize his threat.