The invention discloses a Si-Sb-Se phase transition film material used for a phase transition storage and the ingredient thereof is SicSbaSeb, wherein b is equal to or more than 48 and equal to or less than 60, a is equal to or more than 20 and equal to or less than 40, c is equal to or more than 8 and equal to or less than 40, and a plus b plus c is 100; or b is equal to or more than 60 and equal to or less than 80, a is equal to or more than 20 and equal to or less than 40, c is equal to or more than 3 and equal to or less than 20 and a plus b plus c is 100. Compared with the prior art, the Si-Sb-Se phase transition film material has faster crystallization rate, faster read-write rate and better data holding property than the commonly used Ge2Sb2Te5 material and better thermal stability than SbSe binary material. Meanwhile, the material is free from element Te, thereby being environment friendly, and the material has good compatibility with the CMOS technique.