Pediatric liver tumors are also common and are divided into benign tumors and malignant tumors, with malignant tumors predominating. Primary malignant tumors in pediatric patients are most common in hepatoblastoma, benign tumors are mainly seen in malignant tumors, and liver metastases are mainly caused by neuroblastoma, often the primary neuroblastoma is not found, but the metastases are very large. The cause of hepatoblastoma in pediatric patients is not well understood. Most studies believe that the causative factors are as follows: 1) cirrhosis of the liver; 2) viral hepatitis, especially hepatitis B, hepatitis E, etc., and long-term consumption of foods containing aflatoxins; 3) chemicals can also lead to carcinogenic formation, such as nitrate or nitrite foods, such as long-term pickled vegetables, which can easily contain carcinogenic substances; 4) low immunity of the body, which can also cause hepatoblastoma. liver tumors in children, especially malignant tumors.