To provide a packaging bag easy to hold and open even heated.SOLUTION: In a packaging bag of the present invention, a storing part 21 storing a content F and a non-storing part 22 not storing the content F are partitioned to prevent gas flow therebetween, by forming a separation junction part 20 at a predetermined portion of a bag body 1A composed of a sheet 1a. The non-storing part 22 is formed to a holing size and has an opening start point 24, and an opening scheduled line is set starting from the opening start point 24 leading to the storing part 21 across the separation junction part 20.SELECTED DRAWING: Figure 4

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