In an air evacuative binding type air packing bag and a packing method using the same, an air cylinder is bended to form a first cushioning wall and a second cushioning wall, two sides of the first cushioning wall and the second cushioning wall are adhered to each other to form an accepting space. Next, an article is placed in the accepting space, and air in the accepting space is then evacuated to allow the first cushioning wall and the second cushioning wall to bind the article up to retain the article in the accepting space and not to be shaken with the air packing bag.