If it is excluded that the stones in the common bile duct have been removed cleanly and the bile duct drainage is smooth, it may be caused by liver function impairment due to severe biliary infection caused by too long preoperative stone compression. In most patients, the bilirubin in the serum will decrease rapidly after the bile duct stone is discharged and the obstruction is lifted, but when the liver function is seriously impaired, or even secondary biliary cirrhosis occurs, the recovery of the liver function is slower is requires a certain amount of time. Even after the obstruction is cleared, it takes several months for liver function to recover. And the bilirubin is a process of first fast and then slow, if the effect of surgery is accurate, then do not worry too much, patiently waiting for liver function to return to normal. Therefore, patients need to go to the hospital in time for examination to clarify the cause of the disease, which is conducive to the patients to recover as soon as possible.