论述了大青山河谷地貌的基本特征，河谷地貌的形成和演化明显地受大青山山前断裂带的控制。在山前断裂强烈活动的地段，河流深切呈峡谷，发育多级河流阶地，河谷纵剖面为上凸形，谷底宽度与谷肩山高度之比Ｖｆ值较小；在山前断裂活动较弱的地段，河流侧蚀呈宽谷，河流阶地级数较少，河谷纵剖面为下凹形，Ｖｆ值较大。河谷纵剖面凹度与大青山抬升幅度线性负相关。 Discusses the basic characteristics of the Daqingshan valley landform, the formation and evolution of the valley landforms are obviously controlled by the Daqingshan piedmont fault zone. In the area where there was a strong active fault in the piedmont, the river was deeply gorged with multi-grade river terraces. The vertical section of the river valley was convex, and the Vf value of the width of the valley to the height of the valley shoulder was smaller. In the front of the piedmont, the fault activity was weak Lot, the river lateral erosion was wide valley, the river terraces series less, the valley longitudinal profile is concave, Vf value larger. The concavity of the longitudinal profile of the valley is linearly negatively correlated with the magnitude of the Daqingshan uplift.