The work aims to solve the unbalanced output power for multi-switch reluctance motor (SRM) synchronous control, in order to improve the production efficiency and product quality in the printing industry. On the basis of traditional cross-coupled synchronous strategy, a synchronous control method based on the neuron variable structural PID control was proposed. Such control strategy achieved the variable structural PID control with one neuron controller and adjusted the parameters of the variable PID controller in real time with another neuron controller, so as to ensure that the output powers of two SRMs were the same. According to the analysis on the simulation data, the adjustment time and dynamic response time taken to reach the stable state were shorter than those of the existing synchronous control and its anti-disturbance performance was also improved. The proposed strategy can improve the synchronous tracing performance and anti-disturbance performance of the multi-motor synchronization control system and enhance the synchronous coordination control ability of multiple motors with shaftless drive.