The invention discloses an environment-friendly copper-clad plate preparing method. The method comprises the steps of 1, evenly mixing and stirring 350-450 parts by weight of bisphenol F epoxy resin, 5-15 parts by weight of dicyandiamide, 80-120 parts by weight of ethyl acetate, 0.01-1 part by weight of curing accelerator and 1-10 parts by weight of inorganic antibacterial agent to obtain an epoxy resin adhesive; 2, impregnating glass fiber cloth in the epoxy resin adhesive to obtain impregnated cloth, controlling the content of glass fiber cloth in the impregnated cloth to be 5-50 wt%, and then placing the impregnated cloth in an oven of 80-120 DEG C to be baked for 1-3 h, so that prepreg is obtained; 3, stacking 2-20 pieces of prepreg to obtain a substrate, covering the two opposite sides of the substrate with copper layers, and then conducting hot pressing in a hot press to obtain an environment-friendly copper-clad plate. Through reasonable matching, appropriate variety and usage of the inorganic antibacterial agent and curing accelerator are selected, antibacterial property and peel strength are improved, comprehensive performance is quite excellent, the dispersing effect of filler is good, cost is low, and environment friendliness and economical efficacy are high.