In fact, many children with malignant tumors die not from the tumor itself, but from the complications of chemotherapy. In fact, many children with malignant tumors die not from the tumor itself, but from the complications of chemotherapy. The child, male, 4 years old, inpatient number 253463, outpatient number 63606179, from Heilongjiang province. He went to the local hospital with a cold, fever and cough, and an abdominal ultrasound showed a large tumor in the liver. The local hospital was unable to perform surgery, so he went to Shanghai Children’s Medical Center for surgical oncology. After admission, a review of abdominal enhancement CT showed that a large abnormal soft tissue density mass was seen in the left lobe of the liver, involving both the left inner lobe (upper left inner lobe and lower left inner lobe) and the left outer lobe (upper left outer lobe and lower left outer lobe); the size was about 8.90*5.71*5.5 cm, with isointensity on plain scan and a CT value of about 57 HU, and no obvious calcification shadow was seen within it. The left hepatic vein was thickened and its branches surrounded the mass, the left branch of portal vein was slightly smaller, the remaining hepatic vein and inferior vena cava were not significantly abnormal, the first and second hilar structures were clear, no extrahepatic local invasion or distant metastasis was seen. The first and second hepatic hilar structures were clear, and there was no extrahepatic local invasion or distant metastasis. After completing the preoperative examination and preparation, this huge liver tumor was completely removed in one stage surgery. Postoperative pathological section results confirmed hepatoblastoma, pure fetal type, with negative cut margins and no lymph node metastasis. The postoperative review of methemoglobin decreased to 306 ng/ml. The postoperative review of enhanced CT abdomen did not show any tumor residue, and the examination of enhanced CT head and CT flat scan of chest and whole body bone scan did not show any tumor residue. Therefore, the child could be discharged from the hospital without chemotherapy and recovered 10 days after surgery. However, close follow-up is needed after surgery. The fetoprotein should be checked every month for 2 years after surgery and liver ultrasound every 3 months; the fetoprotein should be checked every 3 months for 3-5 years after surgery and liver ultrasound every 6 months. The probability of recurrence of hepatoblastoma after 5 years is very low, and medically speaking, it is completely cured.