Security Cooperation between China and Indonesia to Address Maritime Security Threats

China and Indonesia face the same maritime challenge in Asia. As their relationship strengthens and their multidimensional strategic connection grows. This research analyzes the maritime security threats China and Indonesia, include the current state of China-Indonesia security cooperation, and proposes the following steps to strengthen security cooperation, especially jointly countering maritime security threats. It also provides policymakers with theory and practice guidance. China and Indonesia can improve security by strengthening their alliance. However, there are some trust issues and a weak security cooperation mechanism. China and Indonesia must increase security cooperation to address maritime security threats. The two countries should increase multi-level defence and military cooperation to eliminate maritime security threats.