Disclosed is a building curtain wall double-hinged rocker arm connection mechanism which is connected between a curtain wall and a building superstructure. The building curtain wall double-hinged rocker arm connection mechanism comprises an upper hinged supporting base, a lower hinged supporting base and a rocker arm, wherein the upper hinged supporting base is connected to the top portion of a curtain wall upright post, the lower hinged supporting base is connected to the lower side of the superstructure, the rocker arm is hinged between the upper hinged supporting base and the lower hinged supporting base, one end of the rocker arm is hinged to the upper hinged supporting base via a first hinge shaft, and the other end is hinged to the lower hinged supporting base via a second hinge shaft. The curtain wall and the upright post are connected via a lateral connecting rod, thereby guaranteeing lateral stability of the curtain wall. The double-hinged connection mechanism can prevent high-frequency vibration or displacement deformation of the superstructure from affecting and damaging the curtain wall, thereby resolving problems of shock absorption and seismic resistance of the building curtain wall. Besides, the utility model can meet requirement of stress on direction perpendicular to the curtain wall surface, is applied to connecting curtain walls in large areas, and is adaptable to integral construction of superstructure in large span.