With the rapid economic development of loess area, engineering loess landslides have become a serious danger to loess area people. It is an important engineering geological problem. Through making classify narrate to the harmful of engineering loess landslides. The main effects of engineering loess landslides are divided into four types. First type is human water activity cause loess landslides. Second is load and unload activities cause the loess landslides. Third is mechanical vibration effect inducing loess landslide. Fourth, loess landslides are induced by underground mining activities. Presents the performance characteristics and take conceive of engineering loess landslides to further research advances.