One-piece anti-theft backpack is an ingenious design with a double-layer explosion-proof zipper running through the whole bag, with level 5 cut-proof fabric, TSA code lock, lockable buckles, and RFID shielding technology to create a comprehensive anti-theft security system. Meanwhile, it realizes the conversion between three-dimensional contouring to a flat-folding one, aiming to solve user's travel items storage, property anti-theft, and space occupation for home storage.