In recent years，China has actively participated in global health governance，advocated the new diplomatic concept of a community of Shared future for mankind，promoted the construction of the “healthy silk road” under the “the Belt and Road” construction，and provided increasing medical and health assistance to the South Pacific islands.This paper analyzes the causes，mechanisms，methods and effects of China's medical and health assistance in the South Pacific island countries.In particular，it needs to be pointed out that China has certain advantages in “hard assistance”，such as the construction assistance of medical institutions，donation of medical equipment and the scale of medical team dispatch.However，there are still some deficiencies in “soft assistance”，including higher management capability，governance level and information system support.