The Qizishan movement is an intensive geotectonic movement, which lead to a series tectonic alteration of the lower part of the “Old Loess” and the contemporanous different facies——lacustrine formation, such as fault, fold (syncline and anticline), etc.; lead to a clearly change for the North China in geomorphology: many large lakes, such as the Nihewan plaeolake, the Sanmen paleolake, etc., disapeared in this time; many rivers, such as the Sanggan River, Fenhe River, Weihe River and Yellow River, formed in this time, too. The Qizishan movement happened after sedimentation of the lower part of the “Old Loess”, at the beginning of sedimentation of the upper part of the “Old Loess”；belongs to Emperor substage in geomagnetochronology，about 0.49～0.50 Ma BP. As results of the Qizishan movement, very good reservoir structure were formed in valleys and piedmont flats, provided water source for many cities; and fault reactive, earthquakes and landslides happened, were harmful to many construction objects.