Abstract: Basing upon the Landsat images this paper briefly described the active faults in Taiwan province and their relation to the earthquakes. The active faults, elongated mostly in a form of belt with distinct tectonic activity, are clearly characterized by the satellite images. The region under investigation is principally controlled by the NNE trending active fault zones, which usually have a left-lateral character. Although the NW trending active zones are not so large on the scale as the former, they behave as a fault with evidence of recent movement in northern Taiwan and are right-lateral in nature. By synthetic analysis of data concerned this region is determined to be compressed from NNW-SSE direction, due to the collision between the Phillippine Sea plate and the Eurasian plate.