The plain part starts from Qingtong Gorge to Hekou town. It has stable and slow riverbed. On both sides are the famous Yinchuan Plain and Hetao Plain.

• 出青铜峡后，河道沿鄂尔多斯高原西北边界绕流，沿途所经，大部分为干旱和半干旱地区，几无支流加入。