A Raman spectroscopic microscope comprising: a light source that is a monochrome light source; a diffraction device configured to diffract light emitted from the light source and thereby generate diffracted light; a spectroscope configured to acquire a spectrum of incident light and a spatial distribution of light intensities of the spectrum; an optical system configured to apply interference light formed by +1st order diffracted light and -1st order diffracted light generated in the diffraction device to an object to be observed as linear illumination light and guide a Raman scattered light (Lr) generated by the application of the linear illumination light to the object to be observed to the spectroscope, the linear illumination light having its longitudinal direction in a first direction perpendicular to interference fringes formed by the interference light; and a control unit configured to scan the object to be observed by the linear illumination light in a second direction perpendicular to the first direction; characterized in that: the control unit acquires a spatial distribution of light intensities of the spectrum of the Raman scattered light acquired by the spectroscope, the control unit corrects a spatial pitch of the spatial distribution of light intensities so that a spatial frequency appearing in the spatial distribution of light intensities becomes uniform, the control unit: divides the spatial distribution of light intensities acquired by the spectroscope into a plurality of sections; acquires a spatial frequency appearing in a spatial distribution of light intensities for each of the plurality of sections; determine a normalized reference value based on the spatial frequencies that are appearing in the light intensity distribution of each of the plurality of sections; and corrects the spatial distribution of light intensities of the spectrum by correcting the size of each pixel of the spatial distribution based on the reference value. a light source that is a monochrome light source; a diffraction device configured to diffract light emitted from the light source and thereby generate diffracted light; a spectroscope configured to acquire a spectrum of incident light and a spatial distribution of light intensities of the spectrum; an optical system configured to apply interference light formed by +1st order diffracted light and -1st order diffracted light generated in the diffraction device to an object to be observed as linear illumination light and guide a Raman scattered light (Lr) generated by the application of the linear illumination light to the object to be observed to the spectroscope, the linear illumination light having its longitudinal direction in a first direction perpendicular to interference fringes formed by the interference light; and a control unit configured to scan the object to be observed by the linear illumination light in a second direction perpendicular to the first direction; characterized in that: the control unit acquires a spatial distribution of light intensities of the spectrum of the Raman scattered light acquired by the spectroscope, the control unit corrects a spatial pitch of the spatial distribution of light intensities so that a spatial frequency appearing in the spatial distribution of light intensities becomes uniform, the control unit: divides the spatial distribution of light intensities acquired by the spectroscope into a plurality of sections; acquires a spatial frequency appearing in a spatial distribution of light intensities for each of the plurality of sections; determine a normalized reference value based on the spatial frequencies that are appearing in the light intensity distribution of each of the plurality of sections; and corrects the spatial distribution of light intensities of the spectrum by correcting the size of each pixel of the spatial distribution based on the reference value. the control unit acquires a spatial distribution of light intensities of the spectrum of the Raman scattered light acquired by the spectroscope, the control unit corrects a spatial pitch of the spatial distribution of light intensities so that a spatial frequency appearing in the spatial distribution of light intensities becomes uniform, the control unit: divides the spatial distribution of light intensities acquired by the spectroscope into a plurality of sections; acquires a spatial frequency appearing in a spatial distribution of light intensities for each of the plurality of sections; determine a normalized reference value based on the spatial frequencies that are appearing in the light intensity distribution of each of the plurality of sections; and corrects the spatial distribution of light intensities of the spectrum by correcting the size of each pixel of the spatial distribution based on the reference value. divides the spatial distribution of light intensities acquired by the spectroscope into a plurality of sections; acquires a spatial frequency appearing in a spatial distribution of light intensities for each of the plurality of sections; determine a normalized reference value based on the spatial frequencies that are appearing in the light intensity distribution of each of the plurality of sections; and corrects the spatial distribution of light intensities of the spectrum by correcting the size of each pixel of the spatial distribution based on the reference value.