For establishment plan to attack target warship again etc. provide an effective reference, according to the complexity and difficulty of the warship-damage assessment, in view of the advantages of the Bayesian network in processing indefinite information, base on the structure layer and injured mode and function characteristic of warship target, build up the model of Bayesian networks for assessing the damage of the warship by GeNIe. Base on the analysis about the physics injures and moving intelligence of warship target, inferring and assessing the result, and according to the experts' judgment to make sure the node conditional probability distribute. The model can nicely carry out the effect of battle and physics injure degree to reflect the quantity of shooting the relation turn analysis.