Surgery for endometriosis can usually be performed laparoscopically if the extent of involvement is small, which is mostly a minor surgery; on the other hand, if the extent of involvement is large, open surgery may be required, which is mostly a major surgery. If endometriosis causes ovarian cysts and the adhesion between the cysts and the surrounding tissues is not obvious, then laparoscopic ovarian cysts can be removed on one side, which is mostly a minor surgery. However, if the endometriosis has involved the uterosacral ligament, rectal uterine pit, rectal or colonic wall, or even the bladder wall and ureter, causing obvious adhesion to the surrounding tissues, open surgery may be required, which is more extensive and mostly a major surgery. If a woman has endometriosis, it is recommended that she seek medical attention in a timely manner, under the guidance of the doctor, to improve the relevant examination, to clarify the need for surgical treatment.