Ovarian cancer spreading to the intestines is generally considered as stage III ovarian cancer. Ovarian cancer is a malignant tumor of ovary, which is often asymptomatic in early stage, and the main symptoms in late stage are abnormal bleeding, abdominal distension, abdominal mass, gastrointestinal symptoms, emaciation, anemia and other manifestations. According to FIGO surgical-pathological staging, ovarian cancer is classified into stage I, II, III and IV. Stage I refers to lesions confined to ovary or fallopian tube; stage II tumors involve unilateral or bilateral ovary with intra-pelvic spread (below the pelvic inlet plane) or primary peritoneal cancer. Stage III tumor involving unilateral or bilateral ovaries, fallopian tubes or primary peritoneal cancer with cytologically or histologically confirmed extrapelvic peritoneal metastasis, or retroperitoneal lymph node metastasis; Stage IV distant metastasis beyond the abdominal cavity. Ovarian cancer spreading to the intestinal canal is generally considered as stage III ovarian cancer. Stage III ovarian cancer belongs to advanced stage, tumor cytoreduction can be performed, and intravenous chemotherapy or peritoneal perfusion chemotherapy can be performed. Targeted drug therapy, such as bevacizumab injection, can also be performed according to the examination. The staging of ovarian cancer should be analyzed by specialists with the results of specialized examination and relevant auxiliary diagnostic instruments, and corresponding treatment measures should be taken according to the staging results.