Fresh blood from the cervix when straining to defecate is a symptom of abnormal uterine bleeding, which is not necessarily malignant and may be caused by factors such as preeclampsia, cervicitis and cervical polyps. 1. Pre-eclampsia: this disease refers to the symptoms of miscarriage before the 28th week of pregnancy, and is related to embryonic chromosomal abnormality, maternal diseases, endocrine abnormalities and other factors, and straining when defecating will lead to increased pressure in the abdominal cavity, which will compress the uterine cavity and lead to uterine bleeding. 2. Cervicitis: This disease is mainly caused by pathogen infection, vaginal flora disorders and other factors, which may lead to bleeding during the two menstrual periods, and may lead to fresh blood flow due to the increase of pressure in the abdominal cavity during bowel movement. 3. Cervical polyps: proliferation of mucosal cells and mesenchyme of the cervical canal, forming tongue-like redundant organisms. The most common symptom is painless vaginal bleeding, which may be triggered by straining. There are many factors that lead to cervical blood in the stool, you can go to the hospital in time, under the guidance of the physician to carry out the relevant treatment.