Abstract:Retrolaminar block (RLB) and erector spine plane block (ESPB) are two new types of regional block found in recent years. Both blocks have been reported as improved techniques of paravertebral block (PVB), and gradually applied to perioperative analgesia of various types of surgery. Although the puncture sites are similar, no clinical studies comparing RLB and ESPB are reported at home and abroad. In order to distinguish them from previous regional block techniques, this review will summarize and compare RLB and ESPB in terms of anatomy, mechanism and clinical application, aiming at discussing their clinical application characteristics and development direction.