The purpose of this paper is to provide an overview of disasters caused by Typhoon Morakot in Taiwan. The characteristics of the rainfall are first discussed, because the rainfall is considered as the major cause of the disasters. Disasters, which include floods, landslides, landslide dams, turbid waters, and driftwoods, are then explained. During Typhoon Morakot, some of these disasters occurred simultaneously in one place. Such disasters are defined as the compound disasters in this paper. To alleviate the loss of compound disasters, the development of the early warning system for compound disasters is suggested.