Abstract: Provided are a quadruped robot and a spine-leg-foot coupling driving method, relating to the technical field of bionic robots. The quadruped robot includes an active spine, and two trunks. The two trunks are a fore trunk and a hind trunk, respectively. The two trunks can pitch and can be telescopically arranged at both ends of the active spine in a front-rear direction. The active spine can drive the trunks to pitch, extend and retract. In accordance with the spine-leg-foot coupling driving method, the pitch and retraction state of the spine and the energy storage and release state of legs during the running of a quadruped are stimulated by controlling the swing state of a swing output member, the extension and retraction state of the trunk and the energy storage and release state of an elastic leg.