Abstract: India’s eastward advancement began in the early 1990s. It was then called the”Look East” policy, and was later upgraded in name to the “Act East” policy in 2014. Over the past 25 years, India’s “Advance East” strategy has continued to expand, undergoing a compound evolution and upgrade from economy to security, from bilateral to multilateral, from the ASEAN region to East Asia and further onto the Asia-Pacific region, which has been reflected in the rise in India’s national strength and regional influence, more and more become an important pillar in India’s diplomatic strategy. Nonetheless, the traditional development trends of India’s eastward advancement are being affected by the newly emerging Indo-Pacific diplomacy strategies and achievements. India’s Indo-Pacific diplomacy was born out of its Advance East strategy, though not limited to advancement east; the core demand of India has always been to merge into the Asia-Pacific region. In other words, India’s Advance East strategy is an important pivot for its Indo-Pacific diplomacy. The reliance of India’s Indo-Pacific diplomacy on major power diplomacy has impacted the core position of ASEAN in its Advance East strategy, while the element of containing China in India’s Indo-Pacific diplomacy will dilute its intention to cooperate with China. This is also manifested in its Advance East strategy. Full text available here.