Difficulty in breathing of pregnant women may be caused by fetal compression or organic diseases, compression can be improved by adjusting sitting posture, oxygen inhalation, etc. Organic diseases should be identified as the cause of the disease and targeted treatment. 1. Fetal compression: mainly due to the gradual growth of the fetus, pressure on the internal organs and lungs of pregnant women, resulting in dyspnea. The sitting position should be adjusted, and the semi-recumbent position or upright position can be adopted. When lying in bed, try to take the left side of the lying position, to reduce the compression, thus increasing the amount of return blood. If necessary, oxygen therapy can be administered under the guidance of a doctor. 2. Organic diseases: If dyspnea cannot be relieved or continues to worsen, consult a doctor for relevant examinations. If patients with hypertension in pregnancy are found, they should be actively treated to prevent eclampsia, and can be treated with antihypertensive drugs under the guidance of doctors, such as nifedipine, labetalol, etc. If necessary, they can be hospitalized to avoid heart failure, pulmonary edema and other serious diseases. Pregnant women should pay attention to appropriate exercise, eat a balanced diet, eat fresh vegetables and fruits, avoid staying up all night, and in serious cases, it is recommended to actively seek medical treatment.