An electronic apparatus and method for determining a reset thereof are provided. The electronic apparatus includes a switch, a sensor, a reset circuitry and a control circuitry. The switch generates a trigger signal as being triggered. The sensor senses a property of an object or an environment external to the electronic apparatus and to provide a sensing information based on the sensed property. The reset circuitry is coupled to the switch and counts from an initial value to a predetermined value when keep receiving the trigger signal from the switch, wherein the reset circuitry further resets the electronic apparatus when counting to the predetermined value. The control circuitry is coupled to the switch, the sensor and the reset circuit and generates a control signal, based on the sensing information, for controlling the reset circuit to re-count from the initial value to the predetermined value.