Abstract: The foundation of software technology is the core course of simulation engineering specialty. The teaching of practice plays a very important role in the study of the course. First of all, the experimental system of the course is designed as the basic verification experiment, improve the design experiment and expand the comprehensive experiment three levels. And then, through the concentration and refinement of the course content, the experimental content is designed as 7 typical experiments, such as, class and object, inheritance and polymorphism, etc.. Based on carefully designing the experiment, teaching activities are gradually practiced. The results show that the teaching effect is improved obviously.