A photovoltaic assembly includes a cell unit layer, a backplate and a reflective layer. The backplate is provided on a back side of the cell unit layer, and one side of the backplate away from the cell unit layer is provided with at least one junction box. The reflective layer is disposed between the cell unit layer and the backplate. The reflective layer includes a plurality of reflective longitudinal strips. Each of the plurality of reflective longitudinal strips covers edges of cell chips within at least one cell string. At least one of the plurality of reflective longitudinal strips is broken at a location adjacent to a cell chip covered by the junction box so as to form at least one opening.