The present invention relates to a port for preventing spike escape type sap bag, and when the spike is inserted into the port, the occurrence of burrs that can fall off the blocking film passing through the spike is suppressed, and the remaining portion of the blocking film surrounding the spike and the entry passage are suppressed. Spikes are in close contact with the spikes to stably fix the spikes and prevent leakage of fluids.In particular, the spike escape prevention sap bag for preventing the spikes from being reliably prevented by a metal snap ring installed in the entry passage. It's about the port. Spike escape prevention fluid sap bag port according to an embodiment of the present invention, the main body 100 is coupled to the tube 500 of the sap bag 400, and the stopper 200 is coupled to the upper side of the main body 100 And a snap ring 600 installed in the stopper 200. The main body 100 is integrally provided with a hollow accommodating part 110 having a fixing protrusion 111 formed on an outer surface of the upper side, and a lower side of the accommodating part 110 so as to fit into the tube 500. A hollow enclosure portion 130 formed at a connection portion between the accommodation portion 110 and the insertion portion 120 to be positioned in the hollow insertion portion 120 and the accommodation portion 110； And a blocking film 140 formed to intersect the inside of the insertion part 120 or the enclosure 130 and having a rupture part 141 that is torn evenly when the spike 300 penetrates. The stopper 200 has a fixing groove 211 formed therein for fitting the upper side of the accommodating part 110, and has a separation preventing part 215 and a snap ring 600 to prevent the snap ring 600 from being separated. A hollow rim 210 formed on the inner surface of the entry passage 212 of the spike for supporting the inclined surface 216； A cover 230 for opening and closing the opening of the center of the rim 210； And a hinge 220 connecting between the ri
