PROBLEM TO BE SOLVED: To provide a method for producing sulfide semiconductor fine particles, in which the sulfide semiconductor fine particle, that contains a small amount of residual organic matter on the surface thereof and has small particle size and low oxygen content, can be produced easily without using additives such as a dispersion stabilizer and to provide the sulfide semiconductor fine particles produced by using the method for producing sulfide semiconductor fine particles.SOLUTION: The method for producing sulfide semiconductor fine particles having 50 nm or smaller average particle size comprises the steps of: replacing the atmospheric gas of a liquid raw material, which contains a sulfide semiconductor raw material having 3.0 eV or lower bandgap and a solvent, with an inert gas; and irradiating the liquid raw material with laser beams.
