An electronic device includes a case set and a case set detachment structure. The case set includes a first case with a plurality of fastening parts, and a second case with a plurality of fastening corresponding parts. The case set detachment structure includes a connecting board, a detachment rod, and an oblique stand. The connecting board is located on the first case and includes a moving part. The detachment rod includes a rod part, a moving corresponding part, and an oblique plate. The moving corresponding part is located on the rod part and is movably connected to the moving part. The oblique plate is connected to the rod part, such that the oblique plate and the rod part form an angle. The oblique stand is located on the second case and corresponds to the detachment rod, which includes an oblique surface.