The invention discloses an anti-mildew density panel attached with a decorative film. The anti-mildew density panel attached with the decorative film comprises a density plate and the decorative film,wherein the decorative film is attached to the surface of the density plate; the thickness of the decorative film is 0.05 to 0.07mm; the thickness of the density plate is 0.5 to 1.8cm; the density plate is prepared from the following components in parts by mass: 80 to 100 parts of wheat straw, 30 to 50 parts of bamboo, and 20 to 50 parts of wood bits; and the decorative film is prepared from thefollowing components in parts by mass: 60 to 70 parts of resin, 20 to 30 parts of polyester polyol, 10 to 20 parts of acetone, 5 to 10 parts of zinc stearate, 5 to 10 parts of nano calcium carbonate,1 to 3 parts of ammonium polyphosphate, 1 to 3 parts of soybean oil, 1 to 3 parts of sodium dodecyl benzene sulfonate, 0.5 to 1 part of toluene diisocynate, 0.1 to 0.2 part of acetic ether, 0.05 to 0.1 part of trimethylolpropane, 3 to 4 parts of diethylene glycol dibenzoate, and 1 to 2 parts of defoaming agent. According to the anti-mildew density panel attached with the decorative film provided by the invention, the pretreated panel raw materials have better mildew resistance, and in addition, the decorative film is added with a flame-resistant material and is low in formaldehyde content, sothat the panel is high in safety.