Endometriosis is a common disease in women and a “modern disease”. As the name suggests, endometriosis is a disease in which the endometrial tissue that originally grows in the uterine cavity “escapes” to a place outside the uterine cavity. According to a survey, 80% of patients have significant menstrual pain and 50% are infertile, affecting women’s health and quality of life. Although endometriosis is not a tumor, it is known as a kind of gynecological “benign cancer”, which is related to its implantation and difficult to cure characteristics, patients suffering from endometriosis must be rational and actively treated. Endometriosis is a common disease in women. It is neither an inflammatory disease nor a tumor, but has the characteristics of malignant tumor proliferation, spread and metastasis – endometrial tissue that originally grows in the uterine cavity “runs” to places outside the uterine cavity. Endometriosis faces many problems and occurs for unknown reasons, but is essentially a benign disease, except in rare cases of malignancy. Endometriosis often occurs in organs or tissues of the pelvic cavity, such as the ovaries, the posterior uterine sulcus and the sacral ligament of the uterus. According to surveys, 80% of patients have significant dysmenorrhea and 50% are sterile, affecting women’s health and quality of life. Endometriosis is a ubiquitous and enigmatic disease, especially “deep infiltrative endometriosis”, which has been on the rise in recent years, and its causes are still to be identified. Fertility specialists say that deep endometriosis is generally difficult to identify, and usually even ultrasound is not useful and difficult to diagnose, because deep endometriosis lesions, like cancer cells, can run everywhere. It invades other organs such as the brain, trachea, colon, and peritoneum, so it is often misdiagnosed as cancer. The incidence of endometriosis is increasing year by year, and it is a bit alarming to say that it is “cancer” because its malignancy rate is only 1%. Other patients may have no painful symptoms, however, ectopic endometrium leads to abnormalities in body secretion and may cause more serious consequences – infertility, which may account for 50%. Patients with thickened uterine wall with adhesions, nodules and masses have similarities to pelvic inflammatory disease in terms of symptoms and appearance of lesions, and 80% of patients have pelvic pain.