Ascariasis is one of the most common disease in human being worldwide. Ascariasis is 2nd to gall stone as a cause of biliary symptoms. The invasion of biliary tract by round worms during early post operative period is an infrequent but serious complication. We present 42 years old man operated for cholelithiasis with Choledocholthiasis on whom choledochotomy and T-Tube insertion was done. On 5th postoperative day Ascaris extruded peri-T-Tube and immediate T-Tube cholangiogram done that showed multiple filling defects in Common Bile Duct (CBD). Patient was managed with saline irrigation of CBD via T-Tube and anti-heliminthic was given. In view of its rarity and unusual presentation the case is being reported.