The utility model discloses an external grid bar mounting structure and glass door and window belong to door and window technical field. External grid bar mounting structure includes glass, first grid bar and second grid bar. First grid bar and second grid bar are respectively established in the opposite sides of glass, and the side of first grid bar towards glass is equipped with first storage wall and first shield wall, and the side of second grid bar towards glass is equipped with second storage wall and second shield wall, and the side of first storage wall away from first shield wall is equipped with the connecting glue who links with glass, and the side of second storage wall away from second shield wall is equipped with the connecting glue who links with glass, and first shield wall and second shield wall are used for reducing the visible angle of connecting glue exposed through glass respectively. The utility model discloses set up
storage structure and shield structure on the grid bar, effectively block and shield connecting glue, not only solve the glue leakage problem of the grid bar in the prior art, but also improve the beauty and connection firmness of the grid bar.