Diffuse optical tomography(DOT)based on the photon transport model provides good quantitative potential for near infrared cerebral functional imaging. Due to the inherent ill-posed inverse problem,the disadvantages of the traditional 3D reconstruction algorithm are low-precision,low-resolution and a big burden in calculation time.Therefore,the simplification and constraint of the reconstruction procedure according to the practical situation have significant meaning. Based on the anatomic structure of head a...