The invention discloses a method for controlling the hoisting height of a cable crane hook not to exceed a set limiting height automatically, which comprises the following steps that: 1, a crane motor for a cable crane winding engine is started to drive a hook to hoist upwards continuously; 2, when the hook does not exceed the set limiting height, a stroke switch is switched off under the action of counter weight hung on a swinging boom of the stroke switch to cut off a signal transmission loop of a wireless signal transmitter, and the crane motor drives the hook to continue hoisting upwards; and 3, when the hoisting height of the hook exceeds the set limiting height, a counter weight supporting plate supports the counter weight to close the stroke switch, the wireless signal transmission loop of the wireless signal transmitter is switched on and the wireless signal transmitter transmits a wireless signal outwards, after receiving the wireless signal, a radio signal receiver controls an alternating-current intermediate relay to operate and cut off a hoisting drive control sub-loop of the crane motor, so that the crane motor stops running and the hook stops hoisting. The method has the advantages of reasonable design, reliable action, simple and convenient operation, good using effect and high practical value.