An organ anastomosis system 1 includes a pair of disc-shaped magnets 2 and 3 which pinch and compress adjacent organ walls 6a and 6b of an object by magnetically attracting each other with the organ walls 6a and 6b interposed therebetween so as to cause local apoptosis and form a continuous hole and an anastomotic part conglutinating around the peripheral part of the continuous hole are formed, which continuous hole specially connects the organ walls with each other. The side circumferential surfaces of respective disc-shaped magnetic bodies 2a and 3a of the pair of the magnets 2 and 3 are formed as tapered surfaces 2b and 3b which gradually decrease in diameter from one end to the other end in the axial direction of the magnetic bodies 2a and 3a.
