The invention provides an electronic control network of an automobile, which relates to an improvement of the conventional electronic control network of an automobile, is more accurate and is capable of solving network conflict and time delay of a vehicle-mounted CAN (Controller Area Network) bus. The electronic control network is designed with three electronic control units (ECUs) of the automobile, namely, an anti-locking brake system (ABS), an electronic power-assisted steering (EPS) unit and an automobile body control unit, and the ECUs form high, medium and low speed nodes of the CAN bus so as to form a control network; and the core of the electronic control network is a software module which is mainly composed of a system initializing module, a start self-checking module, a main control module, a data acquisition module, a data processing module, a reference automobile speed calculating module, a road surface identifying module, an automobile movement state identifying module, a control decision and execution mechanism acting module, a failure diagnosing module and a communication module, and the modules are uniformly dispatched in real time and distributed with operation time by the main control module according to a task management mechanism and exchange data and signals with one another.