Granite artificial stone is a composite produced from the combination of granite, resin, and additives. In this paper, a method is proposed to improve the compressive strength of granite stones. The resins used in the manufacture of granite stones include Diglycidil ether bisphenol type A with the brand EPONATE 557 and its hardener is EPONATE 567. vinyl ester resin type bisphenol type A epoxy based and curing system includes cobalt and catalyst. In this research, to improve the compressive strength of artificial granite stones, suitable methods, such as the use of three additive substances, "NanoClay", "Poly ether ether keton" and "Silicon Rubber" with a weight of 7.5% and 15%. The optimum weight percentage for maximum compressive strength has been investigated and proposed. The compressive strength is determined using the National Standards Organization's of Iran compressive strength test to No. ISNO 16618-13. The results of the compressive strength test show that the resistance of the sample with the addition of poly ether ether ketone and Nanoclay additive in two types of resin can be improved. While the addition of silicon rubber causes a significant drop in compressive strength, the results also show that the addition of 15% by weight of all three additive substances in the samples results in a loss of rock resistance to samples of 7.5%. According to the results of the modifying compressive strength of artificial granite stones, using PEEK and NanoClay with 7.5% weight percentage is proposed.