Whether bile duct dilatation needs surgery or not needs to be analyzed according to the degree of bile duct dilatation and the cause of bile duct dilatation. If the bile duct dilatation is not serious, it can be observed and treated, and if it is caused by choledocholithiasis or choledocholithiasis or bile duct tumors, it needs to be treated by surgery for removing the cause of the disease. Clinically, bile duct dilatation can occur in patients after gallbladder surgery, but the degree is often not serious, if the patient is not accompanied by choledocholithiasis or bile duct tumor, observation treatment can be considered. If bile duct stones or bile duct tumors compress the surrounding tissues and cause bile duct dilatation, patients may suffer from severe abdominal pain, nausea, vomiting and loss of appetite, and even biliary tract infections, which may endanger the patient’s life, and require surgical treatment to remove the cause of the disease and reduce the pressure on the bile ducts. Therefore, whether the bile duct dilatation surgery, need to be analyzed according to the patient’s specific situation, the patient usually have discomfort, it is recommended to go to the hospital in a timely manner, so as not to delay the treatment.