Packaging adhesive film, preparation method thereof and photovoltaic module

The invention belongs to the field of photovoltaic technology. The invention discloses a packaging adhesive film. The packaging adhesive film comprises a POE (Polyolefin Elastomer) layer and an EVA (Ethylene Vinyl Acetate) layer, the POE layer comprises a foam area and a non-foam area, the content of an auxiliary agent in the foam area is higher than the content of an auxiliary agent in the non-foam area, the foam area comprises foam holes, and the foam hole rate of the POE layer is 5-90%; the EVA layers are arranged on the two sides of the POE layer; and after the packaging adhesive film is subjected to lamination treatment for 10-20 minutes at the temperature of 120-160 DEG C and the pressure of 101 kPa, the cell rate is less than or equal to 5%. The invention further discloses a preparation method of the packaging adhesive film. The invention also discloses a photovoltaic module. The POE layer of the packaging adhesive film is provided with the foam holes, so that the auxiliary agent can be stored in the f