The present invention relates to a PE meltable packaging film and its preparation method and application. The PE meltable packaging film comprises the following components in parts by weight: 10-30 parts of low-density polyethylene, 10-24 parts of metallocene polyethylene 45-58 parts of linear polyethylene, 5-20 parts of polypropylene, 1-5 parts of processing aids. The PE meltable packaging film prepared by the present invention is used for asphalt packaging, has high bag body strength, high filling temperature, can be completely melted in asphalt without damaging the quality of asphalt, and has low production cost, while reducing the need for processing waste packaging (such as Iron barrels, kraft paper bags, etc.) to the environment, meet the current increasingly stringent environmental protection requirements, and adapt to the development trend of environmentally friendly packaging.