Pregnant women at 33 weeks with stomach pain and hardness are considered to have uterine contractions. It is recommended to go to the hospital for a timely checkup, which requires listening to the fetal heartbeat, doing ultrasound and fetal heart monitoring. If the degree of abdominal pain is mild, the pregnant woman is advised to take rest. If the pregnant woman has a hard stomach, severe pain, frequent contractions, accompanied by increased discharge or vaginal bleeding, preterm labor may occur, so pay attention to the application of drugs to suppress contractions and fetal preservation treatment. If a pregnant woman has persistent hardness and pain in the stomach, she should be alert to placental abruption and should have an ultrasound examination and pay attention to the placenta. If the diagnosis of placenta abruptio is confirmed, it should be treated in time to avoid adverse pregnancy outcome.