Provided is a self-standing packaging bag that can suppress leakage of a content due to an impact when it falls, and that can be easily manufactured. A self-standing packaging bag formed by heat-sealing a pair of main bodies each including a base material layer and a sealant layer, and a bottom tape including the base material layer and the sealant layer and having a ridge portion, the self-standing packaging bag comprising: Side seal portions provided on both sides of the self-standing packaging bag and bonding the pair of main bodies to each other, A bottom seal portion that bonds the pair of body portions and the bottom tape, and a bottom inner seal portion that is provided along the bottom seal portion in a region of the bottom tape that is enclosed by the bottom seal portion and the ridge fold portion and partially bonds the body portion to the...

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