Abstract:This article aims to analyze and elaborate the analytical domains and related strategic propositions of Geo-strategy, and argues its significance in the study of strategy. The author proposes that,as a particular theory of grand strategy, Geo-strategy actually consists of two kinds of analytical domains:one is defined in terms of geographic locations and attached strategic orientations: the leading maritime power, the heartland powers and the rimland powers; the other from the perspective of material power: sea power, land power, air power, space power and cyberspace power. This article presents that the core domain of Geo-strategy is composed of the leading maritime power, the heartland powers, the rimland powers, and a minor domain of peninsula powers should also be contained. The Geo-strategy, as a theory of grand strategy, is made up of a series of strategic propositions related to aforementioned three types of major powers.