objective To discuss the possible reasons responsible for the symptomrecurrence after operation for choledochocele, prevention and treatment. Methods By analyzing the symptom recurrent cases among 76cases of choledochocele who were treated in our hospital during the period from March 1966 to September 1997, we discuss the possible reasons responsible for the symptom recurrence after operation for choledochocele and its prevention and treatment. Result The possibility of symptom recurrence has no relationship with the age, sex and the type of the cyst. But it is closely related to the opportunity and method of operation (p