The structured light is widely used in 3D surface shape measurement. However, it is likely to cause the intensity saturation when projecting certain intensity structured light to the surface with high reflection. The intensity saturation always causes the reconstructed surface with large errors and even hard to be reconstructed. In order to improve the quality of 3D reconstruction of high reflective objects, an active compensation method base on light intensity divisional projection is proposed. Firstly, the position of the saturated region in the projection plane is calculated by the Gray code grayscales in the projection area. Then, the transition compensation region is proposed to reduce the projection intensity of the fringe pattern in the saturated region smoothly. Finally, the divisional projection optimized compensation method for saturated region is verified by the experiments. The experimental results show that the proposed method can reduce the number of projected images needed to calculate the compensation region, achieve a smooth transition of the saturated region boundary, improve the computational efficiency, effectively suppress the reconstruction error caused by the saturation, and improve the accuracy of the 3D reconstruction.