Colored cement produced by copper-smelting slag is characterized by comprising portland cement clinker 525<#>, copper-smelting slag, lime, fly ash, plaster, composite excitant, paint and cement intensifier, wherein, the composite excitant consists of dead plaster and active aluminium silicon; cement intensifier consists of aluminium sulphate, silicon dioxide, alumina and common salt. The invention mixes a little amount of low-active copper-smelting slag in the cement composite material, and then adds additives such as the lime, the fly ash, the composite excitant, the cement intensifier and the like to excite the activity of the copper-smelting slag, thus preparing the bright, even and various colored cement which has the characteristics of saving energy, reducing discharge, having simple technique, reducing the cement cost, and the like.