Ruthenium (Ru)@Ordered mesoporous carbon (OMC) is a key catalyst in fine‐chemical production. In general, the OMC support is prepared by a wet self‐assembly requiring excessive solvent, toxic phenol–aldehyde precursors and a long reaction time, followed by post‐immobilization to load Ru species. Herein, we wish to report a solid‐state, rapid, and green strategy for the synthesis of Ru@OMC with biomass tannin as the precursor. The chemistry essence of this strategy lies in the mechanical‐force‐driven assembly, during which tannin‐metal (Zn2+ and Ru3+) coordination polymerization and hydrogen‐bonding interactions between tannin‐block copolymer (PEO‐PPO‐PEO, F127) simultaneously occur. After thermal treatment, Ru@OMC catalysts with mesoporous channels, narrow pore‐size distribution (≈7 nm), and high surface area (up to 779 m2 g−1) were directed by F127 micelles. Meanwhile, the Zn2+ ions dilute Ru3+ and avoid the sintering of Ru species, resulting in Ru clusters around 1.4–1.7 nm during carbonization (800 °C). Moreover, the Ru@OMC catalyst afforded a good activity (TOF: up to 4170 h−1) in the selective oxidation of benzyl alcohol to benzaldehyde by molecular oxygen.