神字井—哈什坨洼槽位处松辽盆地长岭断陷中部，油气勘探前景良好，是松辽盆地有利的油气富集带，其构造演化及其对油气成因的影响分析对于长岭断陷下一步勘探开发具有重要意义。基于构造特征、断层古落差、活动速率及生长指数对洼槽开展构造演化分析，结合地层剥蚀特征，明确了神字井—哈什坨洼槽早期为共同沉积，沙河子组末期受挤压隆升影响，整体剥蚀分割，哈什坨洼槽西侧隆升在登娄库组时期进一步加强。同时明确了长岭断陷神字井洼槽-哈什坨洼槽断陷层构造演化为断陷-同沉积-反转的纵向演化规律，而这种早期快速沉降，晚期反转隆升，形成了较为有利的下生上储型成藏组合模式，研究成果可为长岭断陷古构造恢复与进一步勘探提供理论参考。

The Shenzijing-Hashituo Subsag is located in the central part of the Changling fault depression in the Songliao Basin, an area with promising oil and gas exploration prospects. It represents a favorable oil and gas accumulation zone within the Songliao Basin. Understanding the tectonic evolution of this region and its influence on hydrocarbon genesis is crucial for guiding future exploration and development efforts in the Changling fault depression. Based on the structural characteristics, ancient drop of faults, activity rate and growth index method, the structural evolution of the depression was analyzed. Combined with the characteristics of stratum erosion, it was determined that the Shenzijing-Hasituo subsag was co-deposited in the early stage, and the Shahezi Formation was affected by compression and uplift at the end, resulting in overall erosion and segmentation. The uplift on the west side of the Hasituo depression was further strengthened during the Denglouku Formation period. At the same time, it is clear that the tectonic evolution of the fault depression layer in the Shenzijing depression-Hatshituo depression of the Changling Fault depression follows the longitudinal evolution law of fault depression-co-deposition-inversion. This early rapid subsidence and late inversion and uplift form a relatively favorable accumulation combination model of lower generation and upper storage. The research results can provide theoretical references for the restoration and further exploration of the ancient structure of the Changling fault depression.