The effect of pregnancy on patients operated on for stricture of the bile duct has been speculative, and some have been advised not to risk pregnancy. This report concerns 34 pregnancies in 24 such patients. All infants were normal and in good health at birth. Fourteen patients had had two or three surgical procedures for repair of the bile duct and nine had had four or five such procedures. Fourteen of the 24 patients had no ill effects from their pregnancies. All had had excellent or good results from operations on the biliary tract. Six, who were having signs or symptoms of biliary obstruction prior to pregnancy, had moderate symptoms during their pregnancies. The pregnancies, however, did not appear to increase the severity of symptoms or jeopardize results of previous operations on the biliary tract.