This article explores the logistics networks of the Qin state during its war of unification between 230 and 221 bce. First, the article investigates the Qin’s “assigned transfer” logistics system, which was comprised of two forms: the horizontal transfer of resources among regional administrative units, and the vertical transfer between the central and regional governments. Second, it examines the infrastructures and institutions underpinning this logistics system during the Qin conquest, exploring how the emergence of long-distance, empire-wide logistics networks contributed to the reforms to the Qin’s financial administration. Overall, this article analyzes not only the institutional reforms stimulated by the Qin’s war of unification but also the impact of war on economic developments.