The study of tectonic stress field has important significance for the construction of Ningjin salt cavern gas storage project.Summarize the geological conditions and rock mechanics parameters of the study area, establish the finite element model of the tectonic stress field using the ANSYS simulation software, determine the constraint conditions and boundary conditions through the analysis of the tectonic stress field, and analyze and study the current crustal stress distribution characteristics of the Ningjin salt cavern gas storage.The results show:The ancient tectonic stress field in the study area exhibits NW-SE extensional characteristics, and the main body of the current tectonic stress field has returned to a NEE compressive state, with local principal stresses approaching EW direction; The overall tectonic stress increases with depth, and the three directional principal stresses show S_V>S_H>S_h. The regional stress belongs to the self weight stress field dominated by the overlying rock mass; Within the range of 0~7 000 meters underground in the research area, the maximum principal stress range is 0~160 MPa, the intermediate principal stress range is 0~130 MPa, and the minimum principal stress range is 0~125 MPa; The stress release effect of regional faults leads to a low main stress value near them, while the isotropy of salt rock results in a lower main stress difference than the surrounding rock.