The etiology of cervical polyps is not clear, and may be related to chronic cervicitis and persistent pathogen infection. 1. Chronic cervicitis: chronic cervical inflammation stimulates the cervical canal for a long time, which can cause limited hyperplasia of the glands and mesenchyme of the cervical canal and protrudes toward the external cervical opening, thus forming uterine polyps. 2. Pathogen persistent infection: pathogen persistent infection, a large number of lymphocytes, plasma cells and other infiltration in the cervical canal, can also stimulate the cervical canal leading to the production of polyps. Common pathogens include Neisseria gonorrhea, Chlamydia trachomatis, Gardnerella and so on. 3. Others: including excessive estrogen level and so on. If there is any discomfort, it is recommended to consult a doctor in time for diagnosis and treatment.