This work reports for the first time the use of the modified solvothermal method in the synthesis of AgSbS₂ semiconductor nanocrystals, by using oleylamine and oleic acid as complexing agents of Ag⁺ and Sb³⁺, respectively. The –NH₂ terminal groups of oleylamine and –COOH function groups of oleic acid could combine with the metal cation to form a metal complex. AgSbS₂ nanoparticles exhibit a broad absorption in the visible light range and these nanoparticles have great potential in photovoltaic devices.