The invention relates to steel sleeve beam-column nodes and a construction method thereof. A steel sleeve and corbels are comprised, the corbels are welded on the outer surface of the steel sleeve, the steel sleeve is internally sheathed with a cross rib plate, the end face of the steel sleeve is clamped with an annular internal clapboard, the cross rib plate is formed by two irregular steel plates through welding, two ends of each irregular steel plate are trapezoid, the middle of each irregular steel plate is rectangular, the rectangular part is externally sheathed with the steel sleeve, and the annular inner clapboard is provided with reinforcing steel bar holes. The invention has the advantages of reasonable structure, can effectively transmit steel beam load to columns with low steel consumption, and can be widely applied to the beam-column nodes on steel structural transfer layers of concrete structures and steel structures as well as construction of the nodes.