Bleeding at 24 weeks of pregnancy is more important, may be abnormal placenta position, sexual stimulation, pre-miscarriage and other reasons, need to be analyzed specifically. 1. Abnormal placenta position: If the position of the placenta is low or even completely covers the cervical opening, it may be that the placenta may be dislodged before, which is manifested as bleeding. 2. Sexual stimulation: 24 weeks belongs to the middle of pregnancy, at this time to have sex if the amplitude is too large, may lead to the placenta is stimulated, so that the vagina shows bleeding. 3. Pre-eclampsia: If the level of progesterone in the pregnant woman’s body is low or the fetus is affected by infection and other factors, it may lead to pre-eclampsia and vaginal bleeding. When vaginal bleeding occurs in the 24th week of pregnancy, you need to go to the hospital in time and take standardized methods of examination and treatment under the guidance of the doctor to promote the bleeding to stop.