According to the analysis of stray light in high power solid-state laser system, ghost image is 3D demonstrated in the structure model of the facility by ghost-analysis (GA) software. The simulation model to describe ghost-image distribution is also established. The position of the one-or-more-order ghost image in the facility can be fully displayed in all directions so that the ghost-image harm can be avoided. This paper takes some of the “dangerous surfaces” as example,simulating the energy distribution on it by tracing numerous real rays. According to the shape of ghost energy and its corresponding optical stucture, suggestions are made to effectively mitigate the damage on the srudied optical surfaces. This analytical result is in good accordance with that in practice. It is proven that such an analytical method has provided a detailed reference for mitigation of ghost-caused damage.