The invention discloses a construction method of a reusable overhanging scaffold embedded ring, wherein the method mainly comprises the following steps: machining a U-shaped embedded part; arranging a plurality of U-shaped embedded parts on the surface of a slab form along the axial direction of an I-shaped beam, wherein the openings of the U-shaped embedded parts face upward; paving floor slab reinforcements, casting into a structural floor slab; arranging the I-shaped beam in the U-shaped embedded part; respectively fastening a cover board on the U-shaped embedded parts so as to compact the upper end of the I-shaped beam; after the overhanging is finished, taking off the cover board, dismounting the slab form, pulling the U-shaped embedded parts downwards from the structural floor slab; and filling holes remained on the structural floor slab. With the adoption of the embedded ring, nuts are unscrewed after the overhanging is finished, the cover board is taken off, then the U-shaped embedded parts are pulled out of the structural floor slab, the embedded ring is convenient to manufacture and is reusable, so that the material is saved greatly and the construction progress is speeded up.