In order to obtain 3D point clouds of the face,and convert it to precise NURBS surface,the face image acquisition and processing system is established,and its applied algorithms,such as automatic point clouds registration and surface reconstruction are investigated.First,sinusoidal fringe is projected to the face by double fringe 3D scanner,and fringe image is modulated by the face profile.Two separated point clouds of the face are obtained by the conversion of fringe.Then the system is calibrated by the calibration block.Automatic registration of two point clouds of the face is implemented by calculating the rotation matrix and translation vector with coefficient analysis.Triangle patches of the face are obtained.Finally NURBS face surface reconstruction with high precision is implemented by detecting curvature,generating quadrilateral meshes,building UV parameter lines and surface reconstruction,and reconstruction error is analyzed.It shows that the obtained face surface meets the requirement of G1 continuity,and the standard error of the surface reconstruction is only 0.009222 mm.The reconstruction method used for the face surface can also be utilized in 3D detecting and surface reconstruction of complex surfaces.