Since the new century, the developed countries in the West have promoted the in-depth development of civil-military integration, which has greatly guaranteed and promoted the construction and development of their own national defense and military forces, and successfully realized the development of coordination between national defense construction and economic development, and the unification of a rich country and a strong army. This paper draws on the experience of the Chinese civil-military fusion development model. In this regard, through literature research, this article explores the typical military integration development models of the United States, Japan, Israel and Russia in terms of policy support, civil-military interaction, institutional regulation and model changes, andi ntroduces the advanced experiences of each of these countries in promoting the in-depth development of civil-military integration. On the basis of these experiences, he proposes suggestions for promoting the in-depth development of civil-military integration in China in the new era, including strengthening top-level design and planning, improving laws and regulations, unifyingdual use technology standards, focusing on key areas of integration and basing on the realities of China's development.