A hybrid vehicle control device mounted in a hybrid vehicle having a drive source that includes an engine (Eng) and a motor, and a navigation system that acquires travel environment information on a planned travel route, and comprising: a drive source controller (1, 1b) that carries out control of the drive source in accordance with a driving mode of the hybrid vehicle, the drive source controller being configured to selectively control the drive source to operate in one of an EV mode and an HEV mode as travel modes, wherein the hybrid vehicle comprises, as the driving modes, a travel plan mode that sets a travel plan to control the travel mode of the drive source for low fuel consumption travel based on the travel environment information and an assumed requested drive force of a driver, and an eco-mode that controls the drive source to prioritize fuel efficiency over power performance by decreasing a target drive force with respect to an accelerator operation amount, wherein each of the travel plan mode and the eco-mode is manually selectable by turning ON a setting button, characterized in that the drive source controller is configured to determine (S1, S2) whether the planned travel route has been set by the navigation system and whether the travel plan mode has been selected in a state in which the eco-mode is not selected, and to automatically set the eco-mode in parallel with the travel plan mode when the drive source controller determines that the planned travel route has been set by the navigation system and that the travel plan mode has been selected in a state in which the eco-mode is not selected. a drive source controller (1, 1b) that carries out control of the drive source in accordance with a driving mode of the hybrid vehicle, the drive source controller being configured to selectively control the drive source to operate in one of an EV mode and an HEV mode as travel modes, wherein the hybrid vehicle comprises, as the driving modes, a travel plan mode that sets a travel plan to control the travel mode of the drive source for low fuel consumption travel based on the travel environment information and an assumed requested drive force of a driver, and an eco-mode that controls the drive source to prioritize fuel efficiency over power performance by decreasing a target drive force with respect to an accelerator operation amount, wherein each of the travel plan mode and the eco-mode is manually selectable by turning ON a setting button, characterized in that a travel plan mode that sets a travel plan to control the travel mode of the drive source for low fuel consumption travel based on the travel environment information and an assumed requested drive force of a driver, and an eco-mode that controls the drive source to prioritize fuel efficiency over power performance by decreasing a target drive force with respect to an accelerator operation amount, wherein each of the travel plan mode and the eco-mode is manually selectable by turning ON a setting button, characterized in that the drive source controller is configured to determine (S1, S2) whether the planned travel route has been set by the navigation system and whether the travel plan mode has been selected in a state in which the eco-mode is not selected, and to automatically set the eco-mode in parallel with the travel plan mode when the drive source controller determines that the planned travel route has been set by the navigation system and that the travel plan mode has been selected in a state in which the eco-mode is not selected.