In this paper, the distribution of nitrogen (N)-containing compounds of slurry-bed hydrocracking products are investigated. Raw materials of the products were Liaohe atmospheric residue (LHAR), while the hydrocracking reaction was maintained at 430 degrees C with initial pressure of 8.0 MP for 1 h. The distillation fractions, including 180-350 degrees C (diesel fuel), 350 - 400 degrees C (VGO), 400-450 degrees C (VGO), and >450 degrees C (cracked residue), were analyzed by electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry (ESI FT-ICR MS). It turned out that the main type of N-containing compounds in the products was N-1 compounds. The main N-containing compounds in diesel oil were N, compounds with C-17 - C-23, while in VGO the main N-containing compounds were N-1 compounds with C-20-C-26 and, at the same time, N-2 and N2S1 compounds also appeared. In addition, the main compounds in cracked residue were N, compounds with C-24-C-28, but the relative abundance of N-2 compounds, which mainly centralized in cracked residue, increased. Other types of nitrogen compounds were few in products.