For achieving automatic, high-precision, high-density, and photorealistic 3D imaging and measurement of large-scale complex objects, the techniques about multi-node 3D sensor measurement network were described based on 3D sensing with the fringe structured light. It mainly involved the analysis of two key technologies (fringe analysis and phase reconstruction, system calibration and 3D reconstruction) of single 3D sensing, construction and optimization of multi-node 3D sensor measurement network, calibration of multi-node 3D sensor measurement network, matching and fusion of 3D depth data and texture data. Some experimental prototypes and experimental results were given.