Providing a control device of a hybrid vehicle capable of reducing a rattling noise without changing an engine rotation speed. If the second electric motor torque T M2 is within the rattling noise occurrence region G, the engine rotation fluctuation suppression control (at least one of the EGR amount suppression control, the self-EGR amount suppression control, the lean-burn control, and the ignition delay control) is provided to suppress the engine rotation fluctuations as compared to during normal running while the second electric motor torque T M2 is out of the rattling noise occurrence region G and, therefore, the engine rotation fluctuations can be suppressed to reduce thea rattling noise without changing an engine rotation speed N E . Thus, the rattling noise can be reduced without giving an uncomfortable feeling to a user due to a change in the engine rotation speed N E .