Asthma is the most common chronic respiratory disease affecting pregnant women. To provide the best obstetric care, it is necessary to understand fetal oxygenation and how it can be affected by maternal asthma. During pregnancy, fetal well-being should be closely monitored, and asthma care should be carefully integrated with obstetric care. Optimal fetal assessment includes establishing gestational age, assessment of fetal growth, and monitoring fetal activity. Evaluation for high-risk patients may include the non-stress test, contraction stress test, or biophysical profile.