The disclosure provides a packaging adhesive film and a photovoltaic module. The packaging adhesive film includes a planar base layer and a buffer layer, the buffer layer is arranged on a surface of the planar base layer, and the buffer layer includes a plurality of buffer parts arranged at intervals, each one of the buffer part includes a long strip-shaped protrusion, and the long strip-shaped protrusion is arranged in a position corresponding to a photovoltaic ribbon, or arranged in a position corresponding to a cell piece gap in a photovoltaic module, or arranged in a position corresponding to a position of a depression of a lap portion of a laminated photovoltaic module, or arranged in a position corresponding to a position of a depression of a lap portion of a stacked tile photovoltaic module. The packaging adhesive film is simple in structure, and as the disclosure only aims at thickening the part of the packaging adhesive film corresponding to the position where a cell piece is prone to a micro-crack, a fracture and grating breakage, compared with the thickening of the whole packaging adhesive film in the prior art, the packaging adhesive film of the disclosure solves the probability of the reliability problems such as a micro-crack, a fracture and grating breakage occur to the cell piece in the packaging and laminating process of the photovoltaic module, as well as greatly reduces the production cost.