The invention relates to a brain image-based evaluation method and a neuropsychiatric disease evaluation system. The system comprising a storage module in which first to third determination models corresponding to grey matter, white matter and spinal fluid, respectively, are stored, a transmission module, an azimuth angle correction module, a brain tissue recognition module, and a brain tissue recognition module. The azimuth angle correction module is connected with the transmission module so as to receive a 3D brain image to be judged to correct the 3D azimuth angle of the center of the 3D brain image to be judged; the brain tissue recognition module is used for receiving the corrected 3D brain image to be judged and capturing a white matter image part to be judged, a grey matter image part to be judged and a spinal fluid image part to be judged; the processing module feeds white matter, grey matter and spinal fluid image parts of a 3D brain image to be judged into the first to third judgment models after dimension reduction, first to third judgment results are obtained after calculation, and an evaluation result is generated according to the first to third judgment results.
Brain image-based evaluation method and neuropsychiatric disease evaluation system