The invention relates to environment-friendly economical paper which is characterized in that the environment-friendly economical paper is of a quadrilateral shape; one isoceles triangle is cut away from each of four corners; the length of each edge of each isoceles triangle does not exceed one quarter of the shortest edge of the environment-friendly economical paper; and the environment-friendly economical paper can be napkin, tissue paper, wet tissue, toilet paper or extraction paper. By using the environment-friendly economical paper provided by the invention, the paper can be changed from the square shape into the square shape with the four cut corners; the use is not influenced; the production cost is not increased; about 10 percent of materials can be cut away and recovered for direct reclamation; more than about 10 percent of commodities can be additionally produced by using the same materials, so that the cost is reduced, and an effort is made for green environment-friendly healthy life; and meanwhile, the formation of the green environment-friendly economical concept by people in the daily use process is facilitated.