Packaging bag convenient to seal

The utility model discloses a packaging bag convenient to seal, and relates to the technical field of packaging bags. The packaging bag comprises a packaging bag body, a hot-pressing edge is arranged on one side of the packaging bag body, a U-shaped first self-sealing strip fixedly penetrates through one side of the packaging bag body, and a second self-sealing strip matched with the first self-sealing strip fixedly penetrates through the other side of the packaging bag body. One side of the first self-sealing strip and one side of the second self-sealing strip are each provided with a U-shaped sliding groove, one side of the packaging bag body is fixedly connected with a connecting shell and an anti-dazzling screen, the top end of the anti-dazzling screen is located in the connecting shell, and a transparent film is arranged on one side of the packaging bag body; and the adjusting block is in a U shape, and the inner walls of the two sides of the adjusting block are fixedly connected with circular extrusion