The invention discloses an efficient large-area dye-sensitized solar cell which comprises a light anode and a counter electrode. The light anode comprises a conductive substrate and a TiO2 layer, a metal conductive grid is printed on one surface of the conductive substrate contacting with the TiO2 layer, a glass protection layer wraps the surfaces of grid lines of the metal conductive grid, the counter electrode comprises a conductive substrate and a platinum catalyst layer, a metal conductive grid is printed on one surface of the conductive substrate contacting with the platinum catalyst layer, and a glass protection layer wraps the surfaces of the grid lines of the metal conductive grid. The photoelectric conversion efficiency of the large-area DSSC (dye-sensitized solar cell) can be effectively improved, the use ratio of sunlight per unit area is increased, the efficiency of the large-area DSSC can be effectively improved, and the service life of the large-area DSSC can be effectively prolonged, so that the preparation cost of the large-area DSSC is effectively reduced.