Abstract: The foam glass-ceramics were prepared by sintering method using the iron tailings from a tailings pond in Shangluo area as the main raw material, waste glass as silicatization agent, calcium carbonate as foaming agent, titanium dioxide and calcium fluoride as composite crystal nucleating agents. The effects of key parameters in foaming and microcrystallization process on its compressive strength, density and thermal conductivity were discussed. Results showed that when the content of iron tailings is 40%, foamed for 30 min at 900 ℃ and then crystallized at 1150 ℃ for 2 h, the high-strength foam glass ceramics was prepared with average pore diameter of 1.6~2.0 mm, the apparent density of 1.679 g·cm^-3, the compressive strength of 27.22 MPa and the thermal conductivity of 0.107 W/(m·k).