Using the gel system of basalt powder-carbide slag solid waste as the main material and adding desulfurized gypsum， the artificial stone particles were prepared by hydrothermal curing technology. The effects of different hydrothermal curing temperatures， hydrothermal curing time and calcium-silicon ratio on the strength and phase variation of artificial stone particles were analyzed. The results show that the compressive strength of artificial stone particles is higher than 30 MPa， and calcium carbide slag can replace slaked lime. The optimal preparation scheme of artificial stone particles is as follows： calcium-silicon ratio is 0.9， temperature is 200 ℃， time is 12 h and desulfurization gypsum content is about 5%.