Low placenta is also known as placenta praevia or placenta praevia, climbing stairs once or twice a day may be fine, but not absolutely, may also appear painless vaginal bleeding. Ultrasound during pregnancy found that the lower edge of the placenta is close to the cervical os or cover the cervical os, suggesting that there is a problem of low placenta, check the low placenta without abnormal vaginal bleeding, abdominal pain and other symptoms can be climbed stairs, climb the stairs once or twice a day is generally fine, to avoid strenuous exercise. Climbing stairs once or twice a day, climbing faster or more strenuous movements, climbing speed for a longer period of time may induce contractions, resulting in painless vaginal bleeding, is the placenta attached to the site due to contractions occurring after the dislocation of blood vessel rupture caused by bleeding, to be vigilant about the fetus abortion or preterm delivery. Pregnant women with low placenta should pay attention to rest, not to do strenuous exercise, regular checkups, and consult the doctor promptly if there is bleeding.