Fluid packaging bag and application thereof

The invention discloses a fluid packaging bag and an application thereof. The fluid packaging bag comprises at least one fluid buffer body formed by at least two layers of fluid storage membranes and at least one fluid filling valve formed by at least two layers of valve membranes. At least one fluid storage unit capable of storing fluid is formed through a series of plastic packages, and each fluid storage unit is bent to form a containing cavity with an opening to be used for containing a plurality of packaged goods. Each fluid buffer body is further provided with a plurality of sets of limiting seams spaced with one another, and after the fluid storage units are filled with fluid through the fluid filling valves, the packaged goods contained in the containing cavities are limited, so that collision between every two adjacent packaged goods is prevented.