The purpose of this paper is to study the composition of the hydrocarbons found in peat bitumen. As an object of the study two peat profiles from ombrotrophic bogs were used. Efficiency of different solvents was studied and considering the yield of obtained bitumen as most effective can be considered chlorinated hydrocarbons. The concentration of peat bitumen clearly reflects the decomposition degree of the original living material and presence of remains of terrestrial biota. The amounts of bitumen in the studied samples range from 1.8 till 8.1 %. The clean-up procedure of the obtained samples, which was carried out by using solid phase extraction cartridges, ensured removal of more hydrophilic ingredients from the peat bitumens and isolation of hydrocarbon ingredients. The studied bitumen contains linear and cyclic hydrocarbons in the range from C12 till C27.