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Silicone sealant for construction is a kind of gypsum building sealant material which is based on α, ω-dihydroxy-polysiloxane. And nano calcium carbonate or fumed silica are the main reinforcement filler with curing agent and other additives. After being extruded from the package, it is solidified by the air or the moisture contained inside and forms into elastic silicone rubber. It is bonded to the building substrate with excellent weather resistance, high and low temperature resistance, and excellent bonding performance with most building materials. It is widely used in building curtain wall, doors and windows, insulating glass, dimension stone, home decoration and other scenes.