The utility model relates to shopping bag technical field, especially portable shopping bag of
environmental protection of expandable, including base, and the first bag body and second bag body connected to the adjacent two sides of base, the first bag body includes first wide side, second wide side, first long side and second long side, the second bag body includes third wide side, fourth wide side, third long side and fourth long side, the two side edges of base are connected with the adjusting part of one area and base same away from the first bag body and second bag body, the side of adjacent two adjusting parts is connected with the extension of one area and base same away from base, and the fold line part of two adjusting parts is established with base, two adjusting parts are folded in base under the action of fold line part, and make extension to be in the top of base, the utility model aims at providing a kind of shopping bag, which can meet the light demand of daily commuting, can also deal with the sudden
large capacity loading, and give consideration to practical and
environmental protection.