If there is a sudden flow of pink fluid from the lower body, it may be due to non-pathological factors, such as ovulation and menstruation, or it may be caused by pathological factors, such as pre-eclampsia, vaginitis, cervicitis, etc. It is recommended to go to the hospital for treatment in time. The specific cause needs to be determined by going to the hospital for examination. A. Non-pathological factors: 1. Ovulation: sudden flow of pink liquid in the lower body may be caused by being in ovulation, a few days before ovulation abdominal pain with a small amount of pink liquid is generally normal. Women generally ovulate on the first day of menstruation counting backwards fourteen days to the day of ovulation, the first five days and the next four days are called the ovulation period. If the abdominal pain during ovulation is not serious, generally do not need treatment, the symptoms can be self-relieved; 2, menstruation: sudden flow of pink liquid in the lower body, may also be in the menstrual period caused by the first few days of menstruation will flow pink liquid, the last few days of menstrual blood is dark red, may also be accompanied by abdominal pain, nausea and other symptoms, generally do not need special treatment, after the menstruation can return to normal. Pathological factors: 1. Pre-eclampsia: small amount of vaginal bleeding before 28 weeks of gestation, accompanied by paroxysmal abdominal pain, usually related to embryonic factors, maternal elements, environmental factors, etc., resulting in sudden flow of pink fluid from the lower body, and clinical recommendations to be treated by castration; 2. Vaginitis: sudden flow of pink fluid from the lower body and accompanied by vaginal itching, abnormal vaginal discharge and other symptoms, may be due to The inflammation causes the vaginal mucosa to become congested and edematous and the blood vessels to rupture, resulting in sudden flow of pink fluid from the lower body. Patients can use drugs such as metronidazole B6 tablets and tinidazole tablets under the advice of a doctor. The disease usually does not require surgical treatment; 3. Cervicitis: usually related to pathogenic infections, or hormonal imbalance, etc. Inflammation stimulates damaged blood vessels, resulting in sudden pink fluid flow from the lower body. It is manifested by increased discharge and abnormal vaginal bleeding, accompanied by discomfort such as painful urination and frequent urination. It is clinically recommended to be treated with cefixime tablets, doxycycline hydrochloride tablets, azithromycin tablets, etc. 4. Endometriosis: sudden flow of pink fluid from the lower body accompanied by dysmenorrhea, abnormal menstruation, abdominal pain and other symptoms may be caused by the endometrium of the surgical incision not being cleaned up. If medication does not improve the patient’s symptoms and the condition worsens, surgical treatment, such as laparoscopic surgery, can be performed under the advice of a doctor; 5, cervical polyps: sudden flow of pink fluid in the lower body and accompanied by menstrual disorders, vulvar itching and other symptoms, may be caused by cervical infection, chronic inflammation The cervical polyp will be redundant, when the redundant activity, there may be irritating bleeding, thus manifesting as a sudden flow of pink fluid from the lower body. Patients can undergo direct surgical treatment, such as polyp removal, cervical conization, etc., under the advice of a doctor; 6, cervical erosion: usually related to changes in hormone levels, inflammation of the uterine cavity caused by irritation, rupture of blood vessels and thus the sudden flow of pink fluid in the lower body. It is manifested as increased leucorrhea and contact bleeding, which is clinically recommended to be treated by electrocoagulation, cryotherapy, etc.