From a broad perspective, nephroblastoma belongs to kidney cancer, but its characteristics are still different. Nephroblastoma, also known as Wilms' tumor or embryonal tumor of the kidney, is the most common malignant kidney tumor in children, generally 80% of cases occur before the age of five, with an average age of about 3.5 years. The main manifestation is an abdominal mass, most often incidentally discovered by parents or doctors. Diagnosis is generally made through renal ultrasound as an initial screening, while renal CT and MRI can clearly show the extent of the tumor and the surrounding lymph nodes and organs, and whether renal blood vessels are involved. Chest X-rays or CT scans can determine if there are any lung metastases.