Cement produced by utilizing industrial solid wastes and preparation method of cement

The invention provides cement produced by utilizing industrial solid wastes. The cement is prepared from the following raw materials: 77.00-82.50% of clinker, 0.30-7.90% of blaster furnace slag, 1.60-5.55% of desulfurization gypsum, 2.90-7.60% of waste rocks, 0-1.00% of high-silicon sandstone, 0.70-6.70% of fly ash, 0-12.00% of high magnesium waste rock, 0-2.40% of phosphogypsum and 0-0.80% of titanium gypsum, wherein the clinker is prepared from the following raw materials: common limestone, marble sawdust, marble leftover material, high magnesium waste rock, sandstone, red clay and wet-discharged fly-ash. According to the cement, the cement raw material is prepared by using the marble sawdust and leftover material, the waste residue utilization rate is high, and lots of natural resources and energy can be saved. Meanwhile, the high magnesium waste rock is used for preparing the raw material and serves as a mixed material of the cement to be simultaneously used, and the utilization rate of the high magnesium