The electronic monitoring system of diesel engine, is controlled by the micro computer. The monitor can be used to accurately detect and indicate the engine speed, oil pressure, cooling water temperature, oil temperature, and based on the user’s setting, it can timely monitor the parameters set above, any of the abnormal, it will send out the alarm signal, such as sound alarm, light alarm, remote alarm etc. Meanwhile, it can be equipped with long-distance equipment in order to control and display the running data of the diesel engine.