The full name of ovarian endometrioid adenocarcinoma is ovarian endometrioid adenocarcinoma, which may be a malignant disease originating from the formation of ovarian germinal epithelium to endometrioid epithelial metaplasia. The etiology of ovarian endometrioid adenocarcinoma is unclear and may be related to heredity, hormone levels, gynecological diseases and other factors. Early symptoms are atypical and may include abdominal pain, bloating and constipation. In late stage, symptoms are obvious, which can be manifested as abdominal mass, abdominal fluid and other digestive symptoms, and malignant signs such as malnutrition, anemia and extreme emaciation can also appear. Tests that patients with endometrioid adenocarcinoma of the ovary need to undergo include tumor marker screening, cytology, hysteroscopy, ultrasound, CT, MRI and so on. Through these tests, doctors can clarify the development of the disease and develop individualized treatment plans based on the results. The principle of treatment is based on surgery, supplemented by radiotherapy, chemotherapy and other comprehensive treatments.