Effervescent powder packaging bag capable of avoiding water vapor contact

The utility model relates to an effervescent powder packaging bag capable of avoiding water vapor contact, and belongs to the field of packaging bags, the effervescent powder packaging bag comprises an outer packaging bag, the outer packaging bag is of a rectangular shell structure, a paperboard is arranged in the outer packaging bag, the side face of the paperboard is full of cells, and a plurality of placing stations are formed in the cells; easy-to-tear lines matched with the cubicles in shape are arranged on the side surfaces, attached to the cubicles, of the outer packaging bag; the multiple inner packaging bags are used for containing effervescent powder, and the multiple inner packaging bags are correspondingly arranged in the multiple cells; by arranging the outer packaging bag, arranging the paper board in the outer packaging bag, arranging the plurality of mutually independent cells on the paper board, correspondingly placing the inner packaging bag for containing the effervescent powder in the cell