Abstract: Disclosed is a magnetic compression anastomosis system for laparoscopic cholangioenterostomy, including an emission gun, daughter and parent magnetic rings, and an assisting rod, wherein the parent magnetic ring is positioned at the stump of a common bile duct in a purse string suture manner, the relative position is fixed by the assisting rod, the emission gun is loaded with the daughter magnetic ring and makes the same in butt joint with the parent magnetic ring by an intestinal cavity channel of an intestinal tube, the distance between the daughter magnetic ring and the parent magnetic ring is continuously shortened by a push rotary button of the emission gun, and when the relative distance between the daughter and the parent magnetic rings is shortest and mutual attraction is realized, separating the daughter magnetic ring from the emission gun is achieved by an activation mechanism of the emission gun, realizing laparoscopic cholangioenterostomy.