To provide a packaging bag which has a reinforced joint portion of a vertical seal and folding part seal and copes with heavy objects.

The packaging bag comprises:a pair of outer peripheral sheet parts 2a,2b; and a folded sheet part 4 folded into between the outer peripheral sheet parts 2a and 2b. And a vertical seals 5 formed by fusion of facing side edge parts of the outer peripheral sheet parts 2a and 2b and a pair of folding part seals 6, 6 formed by fusion of facing side edge parts of the outer peripheral sheet parts and the folded sheet part are included in a bag body 8 included in the packaging bag.And a vertical reinforcement seal part 13 formed by fusion of facing surfaces of the outer peripheral sheet parts inside the vertical seals 5 and a reinforcement seal 12 formed by reinforcement seal parts 14,14 formed by fusion of facing surface of the facing outer peripheral sheet parts of the folding part seals and the folded sheet part are formed extending over the vertical seal 5 and the folding part seals 6,6.