A percutaneous endoscopic gastrostomy catheter including a top portion having a conical shape, wherein the conical top portion is hollow and has an opening formed at the top end thereof. The opening has such size that an engaging head formed at a top end of a guide wire passes there through. The inside of the conical hollow top portion is larger than the opening in diameter, and the hollow conical top portion is provided with an engaging piece on the inside thereof, the engaging piece allowing the head of the guide wire, which is inserted through the opening, to pass therethrough and preventing the head from being pulled out.