This paper proposes a method to monitor driver's movement using capacitive electrocardiogram (ECG) sensors. The sensor measures ECG by sensing voltage changes in our body, and voltage changes according to the movement of the body also can be measured by the sensor. The proposed method uses independent component analysis to decompose the signal component related to the body movement in the measured signals. In experiments, the signal component by the proposed method was compared with a true signal that represents the movement of a driver, and an averaged correlation coefficient value between the two signals was 0.77. The result shows that the proposed method can give information on the movement of a driver using capacitive ECG sensors, and the information can be utilized to various driver's condition monitoring systems.