The Upper Permian Changxing reefs and banks that attribute to SQ1 HST in sequence stratigraphy are preserved due to their lying within Shizhu Syclinorium. Based on The characteristics of seismic reflection for reef sand banks that confirmed also by drills, seismic facies marks for the reefs and banks are respectively given and compared with each other and many reefs and banks are identified from all seismic cross-sections. A plane map of Changxing Formation distribution of SQ1 HST reefs and banks is drawn. The distribution characteristics and controlling factors of reefs and banks are analyzed and discussed.