Recently, the practical teaching of electronic controlled system for automobiles fall into difficult because complicated in structure. Therefore, better teaching methods are neccessary in order to enhance the students' comprehension. so, the effective method for the purpose of understanding the fundamental principles of electronic controlled system have been developed. The main features of this method is that used a model of Electronic Fuel Injection, and that the working of sensor and actuater is dynamically displayed in simulating the execution on the CRT screen.