 Sphincter of Oddi dysfunction SOD refers to biliary kinetic abnormality of the sphincter of Oddi SO, often accompanied by pain, hepatic and pancreatic enzyme elevation, common bile duct CBD dilation or onset of pancreatitis. Pain caused by SOD affects the quality of life QoL.The primary objective of this trial is to evaluate the efficacy of relieving abdominal pain of Pinaverium Bromide in medication therapy for patients with post-cholecystectomy SOD. 