As professional equipment for calibration of space-location vision camera, the static target simulator supplies exact simulated targets in special work environment. The precision of target decides calibration level as a key part of target simulator. The mathematic model of deformed target is built based on special working conditions, and score of deformation h is determined that can meet required precision through analysis of two points position precision Δδ'ij and geometrical relationship between Δδ'ij and h. For final optimum values, by applying Ansys, the target structure is further optimized with h as one of optimized parameters. The correctness of design is proved by reconstructed target with a result that the optimized parameters h=5.5 μm is smaller than theoretical value 14 μm.