The invention discloses a scattering energy-saving film with an adaptive temperature regulating function. The scattering energy-saving film comprises at least five co-extruded composite film layers, and is divided into the five layers of A, B, C, D and E from outside to inside of a greenhouse. The scattering energy-saving film with an adaptive temperature regulating function has the advantages that a conventional method, in which the greenhouse is cooled at daytime through an external sunshade net while the heat is preserved at night through a film, is replaced to keep the internal planting environment of the greenhouse; through combined use of rare earth elements and various mineral substances, the film is enabled to have the reversibility of light conversion and heat conversion, so thatthe temperature attribute in the greenhouse is adjusted actively, the internal environment of the greenhouse is heated or cooled reversely, and the optimal energy conservation and crop growth effectsin the greenhouse are achieved.