Abstract: In order to raise the distinguishment of the model of integrated evaluation of eco-agricultural construction, an effective and general model-PP(Projection Pursuit) model was presented. The density window breadth R is the window radius that solves the partial density, it is determined by the characteristic of the sample datum, and it is mainly determined by trial calculation or experience, which lacks theoretical basis. This article improves the density window breadth R of the model in theory, it deduces and acquires the empirical formula of calculation, making the model more scientific and stable. Real Coding based on Accelerating Genetic Algorithm was adopted to find the best projective direction, at the same time, the datum of the best projective direction was used to research the level of the influence of each factor to eco-agricultural construction. The classification results which accord with the fact were gained, which provide the decision proof for constructing eco-agricultural reasonably.