In recent years, science and technology policy has come to be seen as an essential component of national security policy. This lecture will look at science and technology policy as a whole from the perspective of national security, and will cover various concepts for understanding technology policy. In the first half, we will organize various concepts necessary to understand science and technology policy, such as the relationship between national security and science and technology, science and technology, stages of maturity, and evaluation. In the second half, after learning the perspective of science and technology policy makers, we will consider the relationship between security and science and technology based on examples from Japan and other countries.