The invention discloses a method for preparing gravure composite ink, and belongs to the field of ink preparation. The method comprises the following steps of: 1) preparing resin liquid, namely dispersing until a
solvent is uniformly mixed, adding
solid resin, and fully dissolving the
solid resin to prepare the resin liquid; (2) feeding, namely dispersing until the resin liquid is uniformly mixed, adding a
solvent, and uniformly mixing to prepare a liquid binder; and adding a
pigment, and uniformly mixing the
pigment and the liquid binder to obtain an ink material; (3) sanding; and (4) adjusting, namely dispersing the ink material, adding an aid, and dispersing until the aid and the ink material are uniformly mixed. The adhesion index of the ink is improved from more than or equal to 85 percent to more than or equal to 95 percent, so that the
composite strength of the ink is higher; the
viscosity of the ink is more stable, and the
thixotropy of the ink is greatly reduced; the
loss rate of the ink in the production process is reduced from about 5 percent to about 2.5 percent; and the
hue of the ink is brighter, and chroma is improved by 5 to 10 percent.