Abstract: An organization device and manufacturing method of the same are revealed. The organization device is formed by a plurality pieces of cloth joined with one another. The weld zones, peripheries and folded areas of the pieces of cloth are joined by ultrasonic welding so as to form a receiving space among the pieces of cloth. At the same time, the weld zones treated by ultrasonic welding are flat so that the organization device is easy to be folded and packaged. At the same time, the organization device doesn't need binding so that the manufacturing processes are simplified, the production efficiency is improved, the labor is saved and the cost is reduced. Moreover, the aesthetic and decorative values of the organization device are improved.