Abstract: A surgical plug and method are disclosed for minimizing leakage of insufflation fluid from an inflated body cavity through a puncture opening during an endoscopic surgical procedure. The surgical plug and method can be used to maintain insufflation during an endoscopic surgical procedure. The surgical plug includes a cap to plug the puncture opening and seal it, and a shaft extending from the cap into the body cavity. The shaft has helical thread, and the shaft is screwed into and through the opening until the cap is adjacent the body wall through which the opening is made. The surgical plug is stable and can maintain its sealing effect throughout an entire endoscopic surgical procedure. It also does not obstruct or interfere with the field of vision at the surgical site within the body cavity during the procedure. The method of using the surgical plug is simple and straightforward.