The practical operation experiment system is composed four hierarchically levels structure for electronic information engineering in our school, i.e., the basic type, expanding type, the comprehensive level and the innovative model. Because the traditional experimental teaching system of "layered progress" has its inherent weakness, such as higher equipment cost, larger waste and serious pollution, we propose to combine physical experiments with virtual simulation experiments by developing and purchasing virtual simulation module. It then forms a new experimental teaching system of virtual-real combination and graduated progress. The new system achieves the purpose of complementary advantages of two laboratory teaching modes. To show the advantages of this new teaching system, we demonstrate two experiment teaching cases based on the virtual-real combination. Through blending modern technology and traditional experiment teaching, we not only enhance students the interest in learning and the ability in innovation or analysis, and also improve the experimental teaching quality and students learning efficiency. Thus, it has certain reference values for construction of engineering professional experiment teaching system.