In view of the complex situation of China’s land and sea border and the severe situation of border and coastal defense, this paper puts forward the strategy of promoting the construction of intelligent border and coastal defense. This paper analyzes the morphological characteristics and overall architecture of smart border and coastal defense, and tries to analyze the key pain points faced by the current smart border and coastal defense construction, such as decentralized and centralized construction, cross-network communication and exchange, comprehensive and partial data convergence, universal and personalized application, and cross-sectoral command and coordination, and gives corresponding countermeasures. The results show that the promotion strategy of intelligent border and coastal defense will become the inevitable trend of the development of modern border and coastal defense.