To address the challenge of evaluating the damage caused by various types of precision-guided munitions during military exercises and training, a simulation study on the damage assessment of long-range guided rockets is proposed. Based on statistical experimental methods, damage theory, and computer simulation technology, the pixel simulation method is improved. Targets and damage areas are represented as collections of points. Combining the damage characteristics of typical munitions against typical targets, models for overlapping damage of guided fragmentation bombs against lightly damaged targets, conditional damage of guided penetration (explosive) bombs against solid targets, and distributed damage of guided cluster bombs against area targets are proposed, along with the design of implementation methods and steps. The simulation examples results show that this method is effective and feasible, and can achieve visual damage effects, providing intuitive basis and technical reference for commanders to organize relevant training.