The NWW tensile fault together with the concentrated distributed paleosesmic wedges which were discovered in Wangmushan of Yangluo area were studied in this paper. Via detailed measurement of Quaternary profiles in this area, the bottom key bed of Yangluo formation(Q 1 y ）was identified，with such distinct characteristics as low structure maturity, high weathering degree, stable thickness at the short distances and weak reticulate pattern, stably distributed between the underlying tertiary red sandstone of Donghu formation(E) and the upper Yangluo formation（Q 1 y ）. On the base of key bed contrasting, along with the profile exposing and trenching work, the characteristics of Wangmushan fault was studied. It was proved that the Wangmushan fault is a extensional normal fault, which is composed of the main normal fault （f1）and two secondary normal faults (f2, f3) derived by the hanging wall. The main normal fault（f1）strike 308°, the dip NE∠40°～52°, spacing 6～8m，synchronously dislocated tertiary Donghe group（E），Yangluo formation（Q 1 y ）,and boulder clay of middle Pleistocene Wangjiadian formation（Q 2 w ）. The traceable length of paleosesmic wedges concentrated distributed in Wangmushan area ranges from 3 to 20m, usually dislocated Yangluo formation, converging downward and pinched out on its bottom. Only respective paleosesmic wedges was found pinched out on the top of tertiary Donghu formation (E), and the joint fissures emerged were weathered into pryan. It is regarded that Wangmushan faults and the paleosesmic wedges concentrated distributed in nearby were developed in the same tectonic stress field. Via the stress analysis of paleoseismic wedges and Wangmushan fault, it was found that the orientation of the principal compressive stress in this area is about NW335°, and the orientation of the principal extensional stress is about NE65°. On this background, the strike of paleoseismic wedges are mainly NW328° and 170°～190°,and the strike of main faults is about 300°. It reveals that Wangmushan fault is Quaternary active fault whichi cut through the gravel layer of Lower Pleistocene Yangluo formation（Q 1 y ） and the Middle Pleistocene clay gravel layer of Wangjiadian formation（Q 2 w ）, and the time limit is newer than the Middle Pleistocene. Wuhan area is surrounded by a series of major fault, especially the NW Xiangfan Guangji fault which passing through Yangluo area. It is one of the seismically active zones of moderate earthquakes in Hubei history along Xiangfan Guangji fault, it was believed that it also the active zone of paleo earthquakes. The Wangmushan fault in Yangluo area and the paleosesmic wedges widely distributed in this area are possibly the reflection of paleo earthquake in the corresponding period. Research on Wangmushan faults and paleoseismic wedges provided the new basis for the research of seismic geological structure in Wuhan area