Abstract: A sensing device for sensing an emergence situation having an acceleration sensor and a method thereof are provided. The sensing device includes acceleration sensing means, blood pressure/pulse sensing means, comparing means, communication means, and a controller. The accelerating sensing means senses acceleration generated due to movement of the body and the blood pressure/pulse sensing means senses a blood pressure and a pulse of a user. The comparing means compares acceleration, a blood pressure, and a pulse with a reference acceleration, a reference blood pressure, and a reference pulse, generates an acceleration abnormal signal, a blood pressure abnormal signal, and a pulse abnormal signal, and outputs an emergency situation signal.