Flexible packaging bag for water dispenser

The utility model discloses a flexible packaging bag for a water dispenser. The packaging bag comprises an upper bag body and a lower bag body, a first opening and a second opening are formed in the two ends of the upper bag body respectively. The caliber of the first opening is smaller than that of the second opening; the outer side of the second opening in the lower end of the upper bag body issleeved with a lower bag body. A third opening is formed in the upper part of the lower bag body; the lower side of the lower bag body is connected with a packaging base in a sealed mode. Elastic lacing belts are mounted on the outer sides of the first opening and the second opening; an annular raised line is mounted on the outer side of the lower end of the upper bag body; an annular concave strip is mounted on the inner side of the upper end of the lower bag body; according to the flexible packaging bag for the water dispenser, the lower bag body can be used for packaging the water dispenserleaving a factory, and th