Building curtain wall waterproof structure

The utility model relates to the technical field of buildings, in particular to a building curtain wall waterproof structure which comprises a glass curtain wall, a curtain wall supporting piece, a waterproof piece, a steel plate and a stabilizing mechanism, the stabilizing mechanism comprises a fixing groove, a rubber pad and an elastic assembly, the steel plate is located in a concrete outer wall, and the curtain wall supporting piece is connected with the steel plate through bolts. The glass curtain wall is clamped on a concrete outer wall through the curtain wall supporting piece, rainwater falling on the glass curtain wall is guided through the waterproof piece, the bottom of the glass curtain wall is sealed through the rubber pad in the fixing groove in the curtain wall supporting piece, and if high temperature occurs, the molten rubber pad is kept in the initial shape under fixation of the fixing groove; and the fixing grooves are pulled towards the side close to the concrete outer wall through the ela