Abstract: The evaluation method based on evidence theory often ignores the correlation between different indicators and their weights when evaluating the effectiveness, resulting in inaccurate evaluation results. To this issue, this paper attempts to integrate the assignment of weights with D-S evidence theory after constructing an evaluation index system and subjective weights for the anti-jamming effectiveness of radar heads. First, it is proved that the addition of evidence with a variance of 0 to the arbitrary evidence synthesis process does not affect the synthesis result. Then, according to the evidence synthesis theory, which considers the weight of each evidence to be the same, the integrated weighted evidence is obtained. Next, the integrated weighted conflict factor is analyzed under the index framework. Finally, the integrated weighted D-S evidence theory is obtained. Through example analysis and comparison with other methods, it is shown that this method can effectively integrate the weights and while reducing the evidence conflict caused by indicators with small weights.