Endometriosis can cause back pain. Endometriosis refers to the growth of endometrial tissue outside the uterine cavity and the myometrium. The displaced endometrium can invade any part of the body, so it may migrate to the lumbosacral region causing low back pain. The main symptoms can be secondary to increased menstrual pain and increased menstrual flow, so women with endometriosis need prompt treatment. The goal of treatment is to reduce and control the pain, which can be treated with medication, surgery, etc. For young women with fertility requirements, conservative treatment with medication should be considered as much as possible, but for those with more severe symptoms and poor results with medication, surgical treatment may also be considered.