Abstract: Most of the traditional boom control system adopts the uniform speed control method, which has a series of problems such as large positioning error and difficult to achieve zero-speed stopping. In order to achieve comprehensive control of the speed and position detection of the boom system, it is proposed to adopt the integrated design of the boom control system, combining IPC, PLC, high-performance multifunctional frequency converter and AC motor to form a double closed-loop control structure, and put forward the dichotomous speed regulation algorithm based on the stage boom on the basis of accurately determining the deceleration and braking distance of the boom, so as to achieve the precise control of the boom. Through the speed monitoring software, the dichotomous speed regulation algorithm and the uniform speed control are compared and tested, and the results show that the dichotomous speed regulation control makes the speed curve smoother and the positioning more accurate; the dichotomous deceleration control algorithm has a better performance in the positioning of the boom, and it succeeds in achieving the precise zero-speed braking and reducing the influence of the mechanical inertia and the positioning error. The test results verify the feasibility and reliability of the scheme, and provide a new solution for the precision and smoothness of stage boom control.