The invention provides a preparation method for multicolor Low-E glass and relates to a preparation method for Low-E glass. The technical problem that in existing methods for preparing multicolor Low-E glass, environmental pollution is caused due to the fact that heavy metal ions need to be added to serve as coloring agents is solved through the preparation method for the multicolor Low-E glass. The preparation method comprises the steps that 1, base ITO glass is cleaned; 2, a metal film layer is prepared; and 3, a dielectric layer is prepared. The market development prospects of the Low-E glass are broad, the whole technology process is simple, and no special equipment and technology is needed. According to the preparation method for the multicolor Low-E glass, improvement is conducted based on a preparation technology of original Low-E glass, and special equipment does not need to be added; and the multicolor Low-E glass prepared through the preparation method provides a broader application range in the fields of building decoration and the like.