Pancreatic pseudocyst may be consequences of acute or chronic pancreatitis or trauma is a benign pancreatic disease. Pancreatic pseudocysts complicate 5% of cases of pancreatitis, or fewer than 1 in 60,000 deliveries, and the management of this rare situation is not consistent. A patient who was 33 weeks of pregnancy diagnosed as a case of puedopancreatic cyst treated with cystogastrostomy in puerperium has been presented. The natural history of pancreatic pseudocysts in pregnant patients seems to be similar to that of nongravid patients