Currently 12 weeks pregnant, the placenta position is low, later on it may increase with the increase of gestational weeks, the formation and extension of the lower segment of the uterus will increase the distance between the inner cervical opening and the edge of the placenta, and the placenta will slowly have an upward movement, currently it cannot be diagnosed as low placenta or placenta praevia. At present, the placenta is low, first of all, pay attention to rest, reduce walking, avoid straining and staying up late, avoid sitting for a long time, and also forbid sex. If there is no bleeding, you can move around appropriately, and you must pay attention to safety when going up and down stairs. Once there is bleeding, you need to take bed rest and avoid walking, and at the same time, you should do routine labor checkups and observe your symptoms closely. If there is bleeding, you need to go to the hospital promptly, and if necessary, consider hospitalization for observation, fetal monitoring, and good symptomatic treatment in case of emergency.