With the wide application of all kinds of precision guided munitions, the rhythm of combat become faster, the environment of battle field become more complicated. It brings a great challenge to the battle damage assessment. the basic principle of battle damage assessment based on detection information is analyzed. Pretreatment and reliability analysis of battle field information and target function damage are elaborated. Single function damage analysis and target damage assessment of the Aircraft-borne guidance ammunition technical area are realized, based on target function damage analysis and fuzzy multivariate theory analysis. With the widely application of all kinds of precision guided munitions, the cost of combat grow rapidly,the rhythm of combat become faster, the environment of battle field become complicated, the damage effect to the target of the evaluation has brought an unprecedented challenges. At present , our army damage effect evaluation of target research has just started, there is no perfect theory system and mature evaluation method, so, target damage effect evaluation model and the method has important practical significance, on account of the scene to collect information on target is the important basis of damage effect evaluation, therefore, how to use all kinds of target damage information damage effect evaluation decision target efficiently collecting from battlefield is the primary problem studying damage effect evaluation.