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目的：探讨大鼠腹壁浅动脉穿支皮瓣的解剖学特点，为该皮瓣切取提供解剖学依据。方法 SD大鼠27只，7只行大体解剖，描述该皮瓣的解剖学特点；20只经颈总动脉行明胶-氧化铅灌注，并通过图片处理技术测量相关数据。结果腹壁浅动脉由股动脉发出后在穿浅筋膜处发出第1个分支，随即分为内外侧支，分别与胸外侧动脉和胸背动脉吻合。其外径在股动脉发出处为（0．46±0．02） mm，在穿经浅筋膜处为（0．46±0．02） mm，其营养面积为（18．37±3．67） cm2，其与胸背动脉的吻合区距离腋下水平线和腹中线分别为（5．34±0．86） cm 和（4．38±0．38）cm；与胸外侧动脉的吻合区距离腋下水平线和腹中线分别为（6．28±0．69）cm和（2．04±0．33）cm。结论大鼠腹壁浅动脉解剖位置和外径恒定，是游离皮瓣移植、皮瓣动脉增压、血流动力学研究等的理想模型。“,”Objective To investigate the anatomy of the superficial epigastric artery perforator flap , and to provide anatomical basis for harvesting flap .Methods Of 27 SD rats, 7 were used for gross anatomy observation and anatomic characteristics and 20 rats for lead oxide-gelatin injection followed by computer picture processing , measurements and the related parameters recording .Results The superficial epigastric artery originated from femoral artery , and gave off its first branch when passed through the superficial fascia .The trunk branched into a lateral perforator and a medial perforator , which anastomosed with thoracodorsal artery and lateral thoracic artery , respectively .The average external diameter of superficial epigastric artery was (0.46 ±0.02)mm at its starting point,and(0.46 ±0.02)mm at the superficial fascia level . The nutritive area of superficial epigastric artery was (18.37 ±3.67) cm2 .The anastomosed area with thoracodorsal artery and lateral thoracic artery was(5.34 ±0.86)cm and(6.28 ±0.29)cm, respectively, away from the horizontal line through axillary,and (4.38 ±0.38)cm and(2.04 ±0.33)cm, respectively, away from the ventral median line.Conclusion The position and external diameter of superficial epigastric artery are constant , and the superficial epigastric artery perforator flap is a ideal flap model for research on free flap transplantation , flap supercharging , and hemodynamics .