Disclosed are a system for providing hybrid user interfaces (UIs) which determines status information according to a subscriber terminal device and a service environment, and a suitable interaction mode corresponding to various content resources and UI resources through analysis of a user profile and provides a service suitable for a user and a situation through a combinative UI resource blended according to the interaction mode, and a method thereof. More particularly, by the system for providing hybrid UIs of the present disclosure and a method thereof, interaction modes corresponding to various content resources and UI resources may be organically combined in each of various set-top boxes and media devices, thereby providing stable and sustainable UIs.