There are many reasons why menstruation is always dripping, mostly due to reproductive tract diseases, endocrine disorders, improper use of medication, systemic diseases and so on. 1. Reproductive tract diseases: cervical diseases such as polyps, cervical cancer, uterine diseases such as endometrial inflammation, endometrial polyps, submucosal fibroids, endometrial cancer and so on may cause irregular menstruation. 2. Endocrine disorders: mental factors, irregular life, ovarian dysfunction, such as polycystic ovary syndrome, etc. will cause changes in hormone levels in the body, which may lead to disorders of menstrual cycle or irregular menstruation. 3. Improper use of medication: some women use hormonal drugs such as emergency contraceptive pills, short-acting contraceptive pills, etc., incorrect or omitted pills, can also appear irregular menstruation. 4. Systemic diseases: patients with systemic diseases, such as aplastic anemia, thrombocytopenia, severe liver dysfunction can also be manifested as irregular menstruation or increased menstrual flow. 5. Other: some women may have abnormal menstruation when the intrauterine device is placed in an inappropriate position or in an inappropriate location. Women should pay attention to menstrual hygiene and keep the vulva clean. In case of prolonged menstruation or increased menstrual flow, go to the hospital in time and have the relevant examination conducted by a professional doctor to clarify the cause of the disease and carry out targeted treatment.