Due to the high demand for cement in the construction industry, it is essential to produce high-quality cement. As we know, in the production of cement, a large amount of heat and electricity is consumed, as well as the release of CO2 gas into the atmosphere. In our research, using activated micro-silica and a new polycarboxylate superplasticizer to reduce cement consumption and increase its strength gave effective results. Activation of micro-silica at a temperature of 60ºC for 180 minutes is indicated as an optimal condition. Due to its microstructure and activated micro-silica, it ensures good secondary hydration with Ca(OH)2, produced as a result of C3S hydration. And the superplasticizer improves the dispersion of microparticles and reduces water consumption. The compressive strength of the cement composite with micro-silica added between 5 and 10% of conventional cement and activated micro-silica has been studied in samples of 2, 7, and 28 days. Also, the obtained samples were analyzed and compared using IR spectroscopic, SEM, elemental analysis, X-ray diffractometry and thermogravimetric analysis TGA methods. We can see from results Which obtained, it has been found that the compressive strength of the cement composite sample with 10% activated micro silica is 20,6% higher than the initial cement sample.