Pancreatoblastoma is uncommon in children and is exceedingly rare in adults. Prognosis is good if the tumor is removed prior to metastasis. Complete tumor resection is the most important factor for long survival. We report two cases of pancreatoblastoma in 4 and 7 years old girls. Palpable abdominal mass was accidentally found by their parents. Abdominal CT scan showed a huge retroperitoneal mass of unknown origin in one case and a mass involving the pancreas in the other case. At laparotomy, well encapsulated tumor mass($10{ imes}10$ cm in maximum dimension) was noted in the body of pancreas in one case, and in the tail of pancreas in the other case( $8{ imes}7$ cm). We resected the tumor and preserved the spleen in both cases. Histological examination revealed that the tumors were pancreatoblastoma. Patients received postoperative chemotherapy with 6 cycles of cisplatinum, adriamycin, ifosfamide and etoposide and are alive in good condition 19 months and 17 months after operation.