A little bit of blood in the leukorrhea at 22 weeks of pregnancy may be due to preeclampsia, cervical polyps, vaginitis, and other causes. It can be treated with medication. 1. Pre-eclampsia: Pregnant women are often accompanied by abdominal pain, back pain and other symptoms, at this time, pregnant women should pay attention to bed rest or follow the doctor’s instructions to use dextroprogesterone tablets and other treatments, if the symptoms continue to aggravate, miscarriage can not be avoided, the termination of pregnancy in a timely manner. 2. Cervical polyps: due to the soft texture of the polyp, blood vessels are more abundant, in the stimulation, easy to bleed, thus appearing 22 weeks pregnant with a bit of blood in the leukorrhea. If the amount of bleeding is small and there are no other symptoms, observation is enough; if there is repeated bleeding, surgical treatment can be taken. 3. Vaginitis: due to the local mucous membrane is stimulated by inflammation, local bleeding can occur, thus appearing 22 weeks pregnant leukorrhea a little blood. In this case, the pathogenic bacteria should be clearly identified, and the corresponding drugs can be used for treatment as prescribed by the doctor. If the 22 weeks of pregnancy with a bit of blood, there may be other reasons, it is recommended to consult a doctor in time, under the guidance of the doctor, improve the relevant examination, to clarify the cause of the disease, symptomatic treatment.