Abstract: There are deficiencies of high failure rate and ineffective function loss in the traditional drive system of belt conveyor. Therefore, the basic structure and speed control requirements of belt conveyor are analyzed in this paper; and according to the long-distance transportation requirements, the design scheme of dual-machine drive frequency conversion speed regulation is proposed. The power regulation of the two-machine drive is analyzed; the drive mode of the permanent magnet motor of the system is determined; the controller and frequency converter of the system are selected; and the main flow chart of the software control of the system is designed. After simulation analysis and verification, the dual-machine permanent magnet direct drive control system can realize the long-distance transportation function of belt conveyor; it reduces the power loss, improves reliability of the system, and meets the production needs of coal mines.