K2>The structural features and tectonic evolution of Luojiazhai structure are analyzed by using the technology of structural analysis. Based on the theory of fracture prediction, a geological model is established to predict the fracture development degree, fracture type and occurrence in kmark: OLE_LINK4">kmark: OLE_LINK2">T₁j₂¹kmark: OLE_LINK2"> reservoir of Luojiazhai structure. Research and prediction results show that the Luojiazhai structure was formed mainly by the influence of the tectonic stress field of SE direction in early stage and NS direction in late stage. T₁j₂¹ reservoir fractures were mainly developed in the faulted zone of NE trend, transition zone of core and flank and structural high. The fracture azimuths were mainly NE and NW trends. The fracture types were mainly the high angle shear fractures, low angle shear fractures and vertical high angle extensional fractures.