The invention relates to a hydraulic power separating hydrodynamic drive device and belongs to the technical field of hydrodynamic drive. The hydraulic power separating hydrodynamic drive device is characterized by comprising a hydrodynamic drive component, a hydraulic pump, a control valve and a drive motor; a power element is connected with the hydrodynamic drive component and a hydraulic powerseparating mechanism; and the hydrodynamic drive component and the hydraulic power separating mechanism are then converged in a drive system to output power to perform power drive. The hydraulic power separating hydrodynamic drive device has the advantages of effectively prolonging service life of a clutch and other components, along with simple structure, high drive efficiency, good energy-saving effect and the like, and is convenient for realizing multi-wheel drive so as to increase traction of vehicles.