In this paper, a chaotic gravitational search algorithm (CKGSA)-Projection Pursuit (PP) evaluation model is proposed to scientifically evaluate the construction types of water-saving society in 16 states in Yunnan Province. The index system and grading standard were constructed from the three aspects of water resources, economic and social conditions and water saving potential conditions. The random interpolation method was used to generate samples to build projection index function based on water resources, economic and social conditions and water saving conditions. The optimal projection vector is searched by CKGSA and the comprehensive projection value of each state is calculated, and the threshold projection value of each grading standard is calculated. The comprehensive evaluation of water saving society construction type is carried out by using the graded standard threshold projection value. The results show that the water-saving type evaluation in Kunming is “extremely poor water-developed-less potential” type. Yuxi city evaluated as “severe water shortage-more developed-potential” type. Chuxiong state as “severe water shortage-Moderate development-moderate potential ”type. Nujiang state evaluated as“ rich water-underdevelopment-great potential ”type. Pu'er City, Dehong, Diqing state as“ relatively deficient water-moderate development-great potential ”Red River, Dali state as“ serious shortage of water-moderate development-large potential ”type; other state assessed as “ moderate water shortage-moderate development-great potential ”type. The evaluation results can provide reference for the construction of water-saving society in sub-region of Yunnan Province.