Abstract: A welding ribbon and a solar cell assembly are provided. The welding ribbon comprises a composite core and a coating wrapped around said composite core; the composite core comprises a plurality of welding cores, at least one first bending part is provided on each of said welding cores, and the plurality of welding cores are wound with each other by means of the respective first bending parts to form the composite core; in addition, at least one third bending part is also provided on the welding ribbon, at least one of the third bending parts is closely attached to the middle part of the corresponding battery sheet, and the direction of bending of the third bending part is perpendicular to the length direction of the welding core.