Touch display device and method for dynamically setting touch inactive area

The invention relates to a touch display device and a method for dynamically setting a touch inactive area. The touch display device for dynamically setting a touch inactive area includes a storage unit, an identification unit, a touchscreen unit and a processing unit. The touchscreen unit presents an operation interface and a plurality of function keys provided thereby, each function key corresponding to a display area and a function. The identification unit generates feature data on the basis of a specific user. The processing unit obtains inactive area setting data by user data stored in the storage unit which corresponding to the feature data to set at least one touch inactive area on the touchscreen unit. However, when a function key corresponding to a display area overlapped with the touch inactive area is touched on the touchscreen unit, a corresponding function will not be activated.