Abstract:With the globalization of trade and the accelerated development of commercial technology, the US Department of Defense (DoD) has realized that the "Trusted Supply" capability established since 2003 has no longer been able to meet requirements and is eager to increase the use of advanced commercial technology on the premise of ensuring the trust of microelectronics. For this purpose, DoD launched an updated microelectronics security framework called “trust trough technology” and developed a portfolio of protection countermeasures in 2017. Now, DoD claims it has established a full lifecycle control capability for microelectronic products. In this paper, DoD’s concerns about the security risks in the microelectronic products it uses is listed, the development history of the DoD “trusted foundry” program is sorted out, the thoughts of the new security framework, and the research content, investment, and achievements of the 9 matched programs are comprehensively analyzed. Finally, valuable practices for reference and warning for our country are proposed.