The accomplishment of infrastructure construction on islands and reefs in the South China Sea, the normalization of combat readiness and garrison, and the increase of civil activities in adjacent waters have higher demands for medical services of islands and reefs. Joint medical services can be provided through refined management of medical processes, optimal allocation of medical staff and sharing of medical materials and consumables based on the current 3 reef hospitals. With a joint system, the medical efficiency and treatment capability will be greatly improved, while casualty evacuation and related medical risks as well as expenditures will be markedly reduced. The authors elaborated the proposal of this joint medical service system in this article.