A method for manufacturing a solar cell panel , the method comprising: forming a stacked structure by stacking a first cover member , a first main sealing member , a solar cell string (SS) including a plurality of solar cells and a plurality of wiring members connecting the plurality of solar cells in one direction, a bus ribbon part (BSP) including a bus ribbon connected to the solar cell string (SS) and extending outwards towards a periphery of the solar cell panel , a second main sealing member , and a second cover member ; and laminating the stacked structure by applying heat and pressure to the stacked structure , wherein, in the forming the laminate structure , an additional sealing member is further positioned in a part of the stacked structure corresponding to the bus ribbon part (BSP) between the first cover member and the second cover member , and wherein each of the first and second cover members is a glass substrate, characterized in that : an insulating member is provided between the solar cell string (SS) and the bus ribbon part (BSP) in a part where the bus ribbon is overlapping at least a part of the solar cell string (SS) to insulate the bus ribbon from the at least a part of the solar cell string (SS), and the additional sealing member is positioned opposite to the insulating member with respect to the solar cell string (SS) and between the first cover member and the first main sealing member . forming a stacked structure by stacking a first cover member , a first main sealing member , a solar cell string (SS) including a plurality of solar cells and a plurality of wiring members connecting the plurality of solar cells in one direction, a bus ribbon part (BSP) including a bus ribbon connected to the solar cell string (SS) and extending outwards towards a periphery of the solar cell panel , a second main sealing member , and a second cover member ; and laminating the stacked structure by applying heat and pressure to the stacked structure , wherein, in the forming the laminate structure , an additional sealing member is further positioned in a part of the stacked structure corresponding to the bus ribbon part (BSP) between the first cover member and the second cover member , and wherein each of the first and second cover members is a glass substrate, characterized in that : an insulating member is provided between the solar cell string (SS) and the bus ribbon part (BSP) in a part where the bus ribbon is overlapping at least a part of the solar cell string (SS) to insulate the bus ribbon from the at least a part of the solar cell string (SS), and the additional sealing member is positioned opposite to the insulating member with respect to the solar cell string (SS) and between the first cover member and the first main sealing member . an insulating member is provided between the solar cell string (SS) and the bus ribbon part (BSP) in a part where the bus ribbon is overlapping at least a part of the solar cell string (SS) to insulate the bus ribbon from the at least a part of the solar cell string (SS), and the additional sealing member is positioned opposite to the insulating member with respect to the solar cell string (SS) and between the first cover member and the first main sealing member . <EOS>