To provide a spectrochemical analysis device providing a filter mechanism that enables a favorable removal of a stray light with easy connection to an optical fiber.

The spectrochemical analysis device which comprises a light source 10 emitting a monochromatic light, an irradiation side optical fiber 14 introducing the monochromatic light to a sample 26, a condensing side optical fiber 20 introducing a converged measured light from the sample 26, and a spectral analysis part 18 spectrochemically analyzing the to-be measured light introduced by the condensing side optical fiber 20, an irradiation side optical fiber grating filter 30 that is placed at an optical output end of the irradiation optical fiber 14 and removes characteristic Raman scattered light of the optical fiber 14 and transmits only the monochromatic light.