Cantilever crane control method and device and operation machine

The invention relates to the field of automatic control, and provides an arm support control method and device and an operation machine, and the method comprises the steps: receiving a motion control instruction for an arm support; determining real-time target attitude data of each arm section in the arm support based on the motion control instruction; and on the basis of the real-time target attitude data of each arm section, at least one arm section in the arm support is controlled to act according to a preset execution sequence. The real-time target attitude data of each arm section in the arm support is determined according to the motion control instruction, and then at least one arm section in the arm support is controlled to act according to the preset execution sequence based on the real-time target attitude data of each arm section, so that the corresponding arm section in the arm support can be automatically controlled to act according to the received motion control instruction for the arm support, a