Yuxian-Guangling Basin is a half-graben basin unit belonging to the basin-ridge structure zone in northwest Beijing area. Based on high-resolution remote sensing image interpretation, DEM 3D analysis, field geological investigation, trenching and so on, the authors made a research on the fault growth of the YBSMF. According to the fault geometry, fault activity and the difference of the faulted landforms, the YBSMF belt can be divided into five segments: Shangbaiyang segment, Tangshankou segment, Beikou segment, Songzhikou segment and Shanghupen segment. After a detailed comparison and analysis of all the sites of fault growth along the YBSMF, the authors find out several characteristics and rules about the growth of the fault.