腹横筋膜与腹膜外筋膜在腹股沟疝外科中应视为两个相互独立的膜结构，但其形态学描述与名词释义至今仍未完全统一。单纯从局部解剖观察膜结构，难以准确理解其延续关系与手术意义。结合胚胎发育过程，可将腹股沟区膜结构概括为贴附腹壁的“壁膜结构”与包绕膀胱、精索等器官或结构的“脏膜结构”两部分。前者主要包括腹横筋膜、腹膜外筋膜和壁腹膜，后者依据部位不同主要为脐膀胱筋膜及包绕精索的尿生殖筋膜。二者之间形成的天然疏松间隙，是腹膜前间隙分离与补片置入较理想的操作层面。按发育与解剖特点认识腹股沟区膜结构，有助于规范层面分离，减少副损伤，提高手术安全性。

In groin hernia surgery, the transversalis fascia and the extraperitoneal fascia should be regarded as two distinct membranous structures, yet their morphological description and terminology remain not fully unified. It is difficult to accurately understand their continuity and surgical significance by local anatomical observation alone. From the perspective of embryonic development, the membranous structures of the inguinal region can be divided into two parts: the “parietal membranous structures” attached to the abdominal wall and the “visceral membranous structures” enveloping organs or structures such as the urinary bladder and spermatic cord. The former mainly includes the transversalis fascia, extraperitoneal fascia, and parietal peritoneum, whereas the latter, depending on the region, mainly includes the umbilicovesical fascia and the urogenital fascia surrounding the spermatic cord. The naturally loose space formed between these two groups of membranous structures represents a relatively ideal operative plane for preperitoneal dissection and mesh placement. Understanding the membranous structures of the inguinal region according to developmental and anatomical characteristics may help standardize layer-by-layer dissection, reduce collateral injury, and improve surgical safety.