The invention relates to a Ca<2+> signal transduction saline-alkali modifier and a mixture ratio of raw materials. The Ca<2+> signal transduction saline-alkali modifier is specially used for modifying chloride saline-alkali lands, sulfate saline-alkali lands and carbonate saline-alkali lands. The related technology comprises the steps of selection of raw materials, crushing, sieving, weighing, mixing, stirring and subpackaging of finished products. The mixture ratio of raw materials is as follows: 0.1 to 0.2 percent of calcium signaling molecules, 1 to 2 percent of paclobutrazol, 0.5 to 5 percent of high molecular polymers, 6 to 40 percent of humic acid, 10 to 30 percent of phosphogypsum, 10 to 70 percent of zeolite powder (between 60 and 80 meshes), 25 to 30 percent of calcium superphosphate, 20 to 40 percent of fermented cow manure, 5 to 10 percent of nitrogen phosphorus potassium, 1 to 2 percent of ferrous sulfate and proper amount of vermiculite. The Ca<2+> signal transduction saline-alkali modifier aims to improve the utilization rate and the economic value of the chloride saline-alkali lands, the sulfate saline-alkali lands and the carbonate saline-alkali lands.