Complete bile duct obstruction is not necessarily malignant. This is because bile duct obstruction can be caused by not only digestive tract tumors, but also bile duct stones, cholangitis and bile duct stenosis. 1. Bile duct stone itself can cause bile duct obstruction, or the secretion of bile siltation can also lead to obstruction, resulting in abdominal pain, abdominal distension, nausea, vomiting, accompanied by jaundice. 2. Cholangitis is caused by repeated stimulation of the biliary mucosa, which leads to thickening of the biliary mucosa and even formation of biliary polyps, causing biliary obstruction. 3. Bile duct obstruction is caused by the small diameter of bile duct after bile duct stenosis, which may be accompanied by abdominal pain, abdominal distension, nausea and vomiting, loss of appetite, and even fever. 4. Malignant tumors such as cholangiocarcinoma, pancreatic cancer, juxta-abdominal cancer, etc. can also lead to bile duct obstruction. Clinically, there are many reasons for the formation of bile duct obstruction, and it is necessary to go to the hospital for further consultation and examination, and standardize the treatment after clarifying the cause of the disease. If you feel uncomfortable, go to the hospital in time to avoid delaying the treatment.