Disclosed is a spectroscope and a measuring apparatus using the same. The spectroscope according to an aspect of the present invention includes a light source, a spectroscopic member for dispersing light from the light source in accordance with wavelength, a slit member arranged so that a portion of the dispersed light from the spectroscopic member can pass therethrough and a remaining portion of the light is blocked thereby, and a sensor having a spatial resolution capable of discriminating the wavelength of light passing through the slit member on the basis of a spectral distribution being projected in a spectral direction of light by the spectroscopic member. With this arrangement, the wavelength of light passing through the slit member can be discriminate real time.