A solar cell module comprising: a plurality of strings electrically connected to one another to form a solar cell panel, wherein a plurality of solar cells are connected to one another in serial in each of the plurality of strings and are arranged in a matrix form; an upper substrate positioned on a front surface of the plurality of solar cells; a lower substrate positioned on a back surface of the plurality of solar cells; a front passivation layer positioned between the upper substrate and the plurality of solar cells; and a back passivation layer positioned between the lower substrate and the plurality of solar cells, wherein each of the plurality of solar cells includes a semiconductor substrate; an emitter region forming a p-n junction along with the semiconductor substrate; a first electrode connected to the emitter region; and a second electrode connected to a back surface of the semiconductor substrate, wherein the first electrode includes a plurality of front fingers configured to extend in a first direction in parallel with one another, a connection electrode configured to extend in a second direction crossing the plurality of front fingers, and a plurality of pads (Pd) formed at crossings of the plurality of front fingers and the connection electrode, wherein the solar cell module further includes a plurality of wiring members (IC, 30, 30b) to form the plurality of strings, the plurality of wiring members being connected to the connection electrode and the plurality of pads of the first electrode in a first solar cell of the plurality of solar cells and connected to the second electrode in a second solar cell adjacent to the first solar cell of the plurality of solar cells, characterised in that a number of the plurality of wiring members connected to the first and second cells is 10 to 18 and a width of each of the plurality of wiring members is 0.24 mm to 0.53 mm, wherein each of the plurality of wiring members has a wire shape having a curved cross section and including a core layer that is formed of metal material and a coating layer coating the core layer of the wiring members; and a connection terminal connected to the wiring members of two adjacent strings, wherein the connection terminal has a different shape from the plurality of wiring members, is formed of a conductive metal material and has a ribbon shape with a rectangular cross section having a width greater than a thickness of the rectangular shape. a plurality of strings electrically connected to one another to form a solar cell panel, wherein a plurality of solar cells are connected to one another in serial in each of the plurality of strings and are arranged in a matrix form; an upper substrate positioned on a front surface of the plurality of solar cells; a lower substrate positioned on a back surface of the plurality of solar cells; a front passivation layer positioned between the upper substrate and the plurality of solar cells; and a back passivation layer positioned between the lower substrate and the plurality of solar cells, wherein each of the plurality of solar cells includes a semiconductor substrate; an emitter region forming a p-n junction along with the semiconductor substrate; a first electrode connected to the emitter region; and a second electrode connected to a back surface of the semiconductor substrate, wherein the first electrode includes a plurality of front fingers configured to extend in a first direction in parallel with one another, a connection electrode configured to extend in a second direction crossing the plurality of front fingers, and a plurality of pads (Pd) formed at crossings of the plurality of front fingers and the connection electrode, wherein the solar cell module further includes a plurality of wiring members (IC, 30, 30b) to form the plurality of strings, the plurality of wiring members being connected to the connection electrode and the plurality of pads of the first electrode in a first solar cell of the plurality of solar cells and connected to the second electrode in a second solar cell adjacent to the first solar cell of the plurality of solar cells, characterised in that a number of the plurality of wiring members connected to the first and second cells is 10 to 18 and a width of each of the plurality of wiring members is 0.24 mm to 0.53 mm, wherein each of the plurality of wiring members has a wire shape having a curved cross section and including a core layer that is formed of metal material and a coating layer coating the core layer of the wiring members; and a connection terminal connected to the wiring members of two adjacent strings, wherein the connection terminal has a different shape from the plurality of wiring members, is formed of a conductive metal material and has a ribbon shape with a rectangular cross section having a width greater than a thickness of the rectangular shape.