This paper proposes the construction of practical teaching system for network engineering speciality, designs a practical teaching system composed of in-course experiments, on-campus practices and off-campus practices, arranges practical teaching according to the principle of hierarchical and progressive ability cultivation, and proposes a hierarchical and progressive practical teaching system. The practical results show that the implementation plan is conducive to promoting the construction of practical links of the specialty, improving the teaching quality, and cultivating high-quality qualified network engineering technology and network application talents for the society.