Advanced closing structure for basement roof post-cast strip and implementation method of advanced closing structure

The invention discloses a basement roof post-cast strip early closing structure and an implementation method thereof, and belongs to the technical field of building construction. The roof structure comprises roof bodies, a post-cast strip is formed between every two adjacent roof bodies, an advanced closing structure is arranged on each post-cast strip, auxiliary steel bars are arranged in the advanced closing structures, the other ends of the auxiliary steel bars extend into the roof bodies, and a supporting assembly is arranged below the roof bodies. The problem that an existing structure is poor in practicability is solved, concrete is poured into the cast iron pipe pair, and rainwater is prevented from flowing into the garage through waterproof paint and pipe body caps; when multiple layers of concrete cover plates are laid, the first inserting groove and the second inserting groove of the upper concrete cover plate are inserted into the hanging ring and the inserting rod of the lower concrete cover plate