A magnetic force type force limiting apparatus (3) and a vertebral body traction bed thereof, so as to solve the problem that at present, a vertebral body traction apparatus easily endangers the human body safety when an electric appliance switch breaks down or a manual operation is mistaken. Provided is the magnetic force type force limiting apparatus (3).Two pulling parts (3.1, 3.2) are attracted by means of magnetic force to form a pull connecting assembly, pulling force is exerted onto the pull connecting assembly and when the pulling force reaches to magnetic attraction force, the pulling parts (3.1, 3.2) perform slippage to release pulling force and finally play a protection role. Because any electronic element is not needed, the magnetic force type force limiting apparatus (3) is not out of control and can ensure the safety. In addition, a vertebral body traction bed using the magnetic force type force limiting apparatus (3) is provided. The vertebral body traction bed comprises a bed body (1), an electric driving apparatus (2), and a pull tape apparatus (4). The magnetic force type force limiting apparatus (3) is connected in the pull tape apparatus (4) in series, the magnetic attraction force of the magnetic force type force limiting apparatus (3) is safe pulling force, and when traction force reaches to the safe pulling force, the pull connecting assembly is separated and releases the pulling force, and accordingly, the human body safety is ensured.Linvention concerne un appareil limiteur de force (3) de type force magnétique et un lit de traction de corps vertébral correspondant permettant de résoudre le problème quactuellement, un appareil de traction de corps vertébral peut facilement mettre en danger la sécurité du corps humain lorsquun commutateur dappareil électrique est défaillant ou lors dune erreur dintervention manuelle. Lappareil limiteur de force (3) de type force magnétique comprend deux parties de traction (3.1, 3.2) qui sont attirées au moye
