Redness at 26 weeks of pregnancy may be caused by placenta previa, preeclampsia, placenta hypoplasia, etc. Patients should consult a doctor in time to clarify the cause of the disease and then treat accordingly. 1. Placental abruption: after 20 weeks of pregnancy or delivery, the normal position of the placenta in the fetus out before, all or part of the peeling from the uterine wall, the patient will have vaginal bleeding, abdominal pain, uterine pressure, fetal heart change and other symptoms, once diagnosed should be corrected for shock, if necessary, terminate the pregnancy. 2. Pre-eclampsia: seeing red at 26 weeks of pregnancy may also be pre-eclampsia, the mother will also have paroxysmal abdominal pain, low back pain and other symptoms, can be used to protect the fetus with drugs such as dextroprogesterone, progesterone and other treatments. 3. Placenta hypoplasia: the lower edge of the placenta is adjacent to or covers the endocervical os, and the patient will have symptoms such as redness, and if the vaginal bleeding persists, early termination of pregnancy should be considered. All the above medications and operations should be carried out under the supervision of a doctor.