The utility model provides a universal CAN node for a distributed agricultural-machine navigation control system. The universal intelligent node comprises digital communication interfaces of analog voltage measurement, data signal I/O, RS232, RS485 and CAN, and can be provided with functions of pose data resolution, wheel corner detection and turning control by software configuration. The function of the pose data resolution is used for receiving, resolving and transmitting data of a GPS and an electron compass to a CAN bus. The function of the wheel corner detection is used for receiving information of a corner encoder, calculating a wheel corner based on a model and transmitting to the CAN bus. The function of the turning control is used for controlling a stepping motor in a mechanical turning mechanism to realize automatic turning control of an agricultural machine. The intelligent node provided by the utility model has strong universality peripheral apparatuses of the GPS, the electron compass, the wheel corner encoder and a turning actuator can be connected with the distributed agricultural-machine navigation control system by the CAN bus and data processing and control of the above apparatuses can be realized.