Abstract: In order to meet the control requirements for the dynamic and static performance of the power transmission line operating vehicle in the complex operating environment,aiming at the problem of DC speed regulation of transmission line operating vehicles,this paper first established the mathematical model of DC motor,and based on the traditional PID control algorithm,studied the BP neural network PID control strategy based on the optimization of the firefly algorithm, and realized the power transmission high-precision control of the line operation vehicle motor.On the basis of theoretical analysis,the proposed strategy was simulated and verified,and the simulation results proved the effectiveness and feasibility of the strategy.