To solve the problem of strayed light introduced by the shield in an inertial confinement fusion system, we establish a three-dimentional honeycomb structural model and propose a strayed light analysis method of shield. We also analyze the influences of the honeycomb curvature and central distance of two honeycombs on the strayed light. The results show that the laser is reflected through the shield, and there is always an area with the highest light intensity of the reflected light. The peak-to-valley of the reflected light intensity and total power of the light back to system increase with the increasing honeycomb diameter and honeycomb spacing of the shield. Based on this, the diameter and spacing of honeycomb should be controlled strictly when we design shield, so that to make the terminal optical system keep away from the area of highest reflected light intensity and let the strayed light distribute evenly in solid space.