In the paper, a high real-time, high-precision multi-motor control system based on micro operating system and CAN bus is introduced. The system is proposed based on NXP LPC11C14 micro-processors. The transplanting CoOS operating system allows the execution of the program in order to run the task, which effectively solves the multi-motor synchronous coordination problems. By forwarding commands by CAN bus, the problem of cascading multiple controllers work is solved. It also expands the control range. The VS2008 MFC PC control software design allows to achieve the control of a graphical display. The application results show that the system is stable and reliable, real-time, it also has some practical and promotional value.