The invention discloses a different-plane inclined unit curtain wall system, and relates to the technical field of building curtain walls. The different-plane inclined unit curtain wall system comprises a square frame and glass curtain wall plates, wherein T-shaped sliding strips are fixedly connected to the rear side wall and the right side wall of the square frame, and T-shaped sliding grooves are formed in the front side wall and the left side wall of the square frame. Through mutual cooperation of a connecting plate, a threaded sleeve, a sliding strip, a threaded rod, a sliding groove, linkage rods and a swing plate, the threaded sleeve can drive the threaded rod in threaded connection to move upwards by rotating the threaded sleeve, and meanwhile, the sliding groove in the front sideof the threaded rod slides on the sliding strip, so that the threaded rod is limited; and the threaded rod ascends to drive a first square block fixedly connected to the upper portion to move upwards,then the first square block drives the four hinged linkage rods to move upwards at the same time, the four linkage rods drive the swing plate at the upper end to be in lap joint with the inner sidesof the four glass curtain wall plates, and therefore auxiliary installation is achieved, and the situation that gaps between the curtain wall plates are uneven is avoided.