Abstract:To overcome the shortcomings of the marine ecological indexes comprehensive assessment methods used today, an improved projection pursuit (PP) model based on an adaptive ant colony algorithm was presented. The improved ant colony algorithm was employed to realize the projection pursuit. And the values of the evaluation index were synthesized into an one-demension projection value which was used to finish the assessment. Engineering practice shows that the method can realize the assessment simply, objectively and feasibly. This work has significance for the marine ecological indexes comprehensive assessment.