Proposed is a three-dimensionally stacked multi-mode sensor for simultaneously detecting pressure and temperature. The multi-mode sensor includes a temperature sensor part including a first thin film transistor; and a pressure sensor part including a second thin film transistor and a piezoresistive layer stacked in a perpendicular direction on the temperature sensor part, the piezoresistive layer including a piezoresistive sheet. The multi-mode sensor can accurately detect pressure and temperature simultaneously without being affected by temperature changes.