Abstract: A sample measurement pool comprises a reflecting cavity and at least one reflecting structure, wherein the reflecting cavity is configured to accommodate a sample to be measured; the reflecting structure is arranged at a boundary of the reflecting cavity; and the reflecting structure comprises a contact surface in contact with the sample to be measured, and a reflecting surface away from the sample to be measured. The sample contact surface has a chemical inertness to the sample, and meanwhile, the surface away from the sample to be measured serve as the reflecting surface, so that the sample to be measured and impurities therein are prevented from damaging the reflecting surface having a reflection function. The sample measurement pool has the advantages of a long optical path and high environmental adaptability.