Abstract: Aiming at information fusion problem under complex environment, an intellectualized information fusion model, NFE model, which is an organic combination of Neural network, Fuzzy reasoning and Expert system is proposed. The necessity of constructing a complete three-dimensional intelligent information fusion model is analyzed from an engineering perspective. Considering various factors including sensor performance, weather situation, electronic interfere and clutter intensity that effect the credibility of sensors, analysis for weights of sensors is provided and credibility estimator is designed. Simulation experiments prove that the NFE model could realize target recognition effectively under the circumstances of low confidence and sensor fault etc.