A structure for blocking heat transfer through a thermal bridge of a building, includes an inner visual glass curtain wall, an outer visual glass curtain wall, an indoor metal frame, an outdoor metal frame, an outer decorative metal cover, a first thermal break strip, a second thermal break strip, a first nylon thermal break block and a second nylon thermal break block. The first thermal break strip, which is located in contact with the outdoor metal frame, the indoor metal frame, the first nylon thermal break block and the second nylon thermal break block, is an aerogel thermal insulation blanket. The second thermal break strip, which is located in contact with the indoor metal frame, the second nylon thermal break block, the outer decorative metal cover and the inner visual glass curtain wall, is another aerogel thermal insulation blanket.