Abstract: As the innovation resource is limited， how to reasonably allocate innovation resources in the fields of system integration， robot main body， and key components is a key issue to be solved urgently. Based on the system dynamics model， the industrial robotic industry development model is established， and the development of different fields of the robotic industry is simulated by real data. The research has found that in the early stage of the robotic industry， industrial policies should focus mainly on supporting the development of system integration and secondarily on the development of the robot body and the key components. In the later stage when the development of robot main body gradually exceeds that of system integration， the focus should be placed mainly on robot main body and key components and secondarily on system integration. This path has referential and practical significance for improving China's industrial robotic industry policy.

Key words: system dynamic, robotic industry, development path of industry