目的 :本次研究主要回顾性分析小儿肾母细胞瘤的超声诊断特征,以提高其超声诊断水平。方法 :回顾性分析了2015年1月至2016年12月期间的2例肾母细胞瘤患儿的超声表现特点。结果:两例患儿肿瘤均表现为患肾体积增大、外形失常,并见类圆形不均质实性肿块,内部为中等偏低回声,分布不均,伴簇状分布之多房囊腔,肿块周边及内部血流丰富,阻力指数增高,部分肾实质和肾窦被瘤体占据,仅残留部分正常组织。讨论:小儿肾母细胞瘤在超声诊断中常表现为中等偏低、回声不均之类圆形实性肿块,可发生于肾的任何部位,可单侧或双侧发病,肿瘤在生长过程中压迫或浸润邻近肾组织,造成肾盏肾盂破坏或挤压,可见积水和引流淋巴结肿大,超声易于发现并做出鉴别诊断。 Objective: This study mainly retrospectively analyzed the features of ultrasound diagnosis of pediatric nephroblastoma in order to improve the level of ultrasonic diagnosis. Methods: The ultrasound features of 2 cases of Wilms’ tumor from January 2015 to December 2016 were retrospectively analyzed. Results: The tumors of both children presented with increased renal volume, abnormal appearance, and seemingly round heterogeneous lumps. The internal tumors were moderately low echoes and were unevenly distributed. Clusters of multiple cysts , Mass around the tumor and internal blood flow, resistance index increased, part of the renal parenchyma and renal sinus were occupied by the tumor, only part of the normal residual tissue. Discussion: Pediatric nephroblastoma in the ultrasound diagnosis is often low to medium echo, such as uneven round solid tumors can occur in any part of the kidney can be unilateral or bilateral disease, the tumor in the process of oppression Or infiltration of adjacent renal tissue, causing renal calyx renal failure or extrusion, we can see hydrocephalus and drainage of swollen lymph nodes, ultrasound is easy to find and make a differential diagnosis.