The invention provides a high-resolution linear array CCD direct-reading type spectrometer, and the spectrometer comprises an incident module, a collimating mirror, an optical grating, a focusing lens, and a linear array CCD chip. The collimating mirror is disposed on an emergent optical path of the incident module, and the optical grating is disposed on an emergent optical path of the collimating mirror. The focusing lens is disposed on the emergent optical path of the optical grating, and the linear array CCD chip is disposed on the emergent optical path of the focusing lens. The incident module is used for segmenting the work band of the spectrometer into a plurality of subbands, and just allows the light at one suband to come out. The collimating mirror is used for the collimating of the emergent light of the incident module, and then enabling the light to be transmitted to the optical grating in different inclined angles. The central wavelengths of light beams at different subbands at different inclined angles have the same diffraction angle, and the light reflected by the optical grating is projected to the linear array CCD chip through the focusing lens. The spectrometer can greatly improve the resolution and sensitivity through the spectrum band segmenting technology and the technology of grating space division multiplexing.