A packaging bag for shockproof includes a bottom wall, a shielding portion, a limiting film and a cover body. Both sides of the shielding portion are adhered to the surface of the bottom wall by heat sealing, and a nesting space is formed between the shielding portion and the bottom wall. The limiting film is stacked above the bottom wall and includes a body and a reversed portion. An accommodation space is formed between a bottom surface of the body, the surface of the bottom wall and the outer longitudinal heat sealing lines, and a limiting space is formed between the top surface of the body, an inner side of the reversed portion and the inner longitudinal heat sealing line. The cover body includes cover air columns located on an upper side of the bottom wall.