Methods and devices for batch scanning 2D barcodes are provided by using a 2D barcode positioning process to determine a barcode area corresponding to each 2D barcode of a plurality of 2D barcodes in an image. According to the barcode area corresponding to each 2D barcode, the image containing the plurality of 2D barcodes can be segmented to provide a plurality of 2D barcode images with each barcode image corresponding to one 2D barcode of the plurality of 2D barcodes. Each barcode image of the plurality of 2D barcode images corresponding to the plurality of 2D barcodes can be decoded to obtain data contained in each barcode image. An exemplary device can include a positioning module, a segmenting module, and a decoding module.