Shale oil resources are rich in the Liushagang Formation of the Weixinan Depression, but the reservoir's geological conditions are complex and evaluating its fracturability is difficult, making relevant studies urgently needed. In this paper, the geological characteristics of shale oil reservoirs in the Liushagang Formation were analyzed by combining core physical analysis, nuclear magnetic resonance, scanning electron microscope, rock pyrolysis, X-ray diffraction, and mechanical experiments. A fracturability evaluation model with coupled brittleness index, horizontal stress difference coefficient, and fracture density was used to evaluate the fracturability of different types of oil shales. The results show that the Liushagang Formation shale has low porosity (mainly in 1%~5%) and low permeability (mostly less than 0.1×10-3 μm2) and the reservoir shows the characteristics of low pore and low permeability. The pore size is mainly micropore and mediumpore, mainly concentrated in 0.001~0.05 μm. The shale reservoir space type includes four pore types: intercrystalline pore, organic matter pore, intergranular pore, and microfracture. The organic matter types of mud shale and oil shale in the second member of the Liushagang Formation are Ⅱ1-Ⅱ2 type and Ⅰ-Ⅱ1 type respectively, which are generally in the mature stage. The reservoir rocks are mainly composed of felsic minerals, with an average clay mineral content of 33.24%. The brittleness of interlayer and interbedded oil shale is preferable to that of matrix and lamina oil shale, and the rock reservoir has a stronger anisotropy. It was shown by fracturability evaluation that: the low fracturability index of matrix and lamina oil shale makes it difficult to use for shale oil; interlayer oil shale has a fracturability index of 51.16%, with some potential for fracture transformation; the fracturability index of interbedded oil shale is the highest, reaching 57.03%, making it recommended to prioritize reservoir fracture transformation. This study has great significance in the in-depth understanding of the geological characteristics of the shale oil reservoir in the Liushagang Formation and the subsequent fracturing construction.