The invention mainly relates to the technical field of ceramic glaze processing, and discloses a high-density dark green glaze. The high-density dark green glaze is prepared from silicon dioxide, talcum powder, cerium oxide, lanthanum oxide, zirconium oxide, praseodymium oxide, cobaltous oxide, titanium dioxide, nano-zinc oxide, modified wollastonite, chlorite and table salt. The high-density darkgreen glaze is wide in raw material source, low in price, bright in color and fine in enamel, and has good fluidity and smearing performance, cracks and pinholes are avoided, the glaze surface is smooth and dense, and the grade of ceramic products is obviously improved. After the silicon dioxide, the talcum powder, the cerium oxide, the lanthanum oxide, the zirconium oxide and the praseodymium oxide are mixed and smashed, the mixture is firstly slowly heated and then rapidly heated, the praseodymium oxide is dark green through high-temperature heating, meanwhile, after the raw materials are heated at high temperature stage by stage, the fineness and the smoothness of the glaze can be improved, the density is high, and the cracks and the pinholes are avoided in the glazing process.