The multifunctional traction bed YHZ-IAJ (shortened to traction bed) uses a telescopic motor as a power source for traction force, an electric mechanical system for the sliding surface of the bed, a control switch for movement points to achieve automatic reciprocating traction, support release, and continuous traction functions. The bed is easy to operate, with safe and reliable performance, allowing patients to master the size and force of traction, as well as control the frequency of the bed surface traction forward and backward, traction time, and duration of intermittent time.