Abstract: A packaging structure of container is provided with a base layer and an insulating layer joined together to form a flexible packaging structure. The base layer can be made of paper materials or metal materials, and the insulating layer can be made of the foam thermal insulation materials of EPE, EPP, EPS, EPO, or materials with similar properties. The packaging structure provides packaging to wrap around items that can be packed, such as bottles or cans, and achieves the benefit of insulation and heat preservation using the insulating layer. In addition, a magnetic layer can be provided on the insulating layer, so that the packaging structure not only provides benefits of insulation and heat preservation through the package of various shapes of items, but also provides the effect of fixture by having its both ends absorbing each other at a fixed position using the magnetic layer afterward.