If a pregnant woman has a violent cough at night, it may be related to a dry environment, respiratory tract infection, and compression of the heart and lungs due to the enlargement of the uterus in late pregnancy. An air humidifier can be used indoors to humidify the humidity in the air. You also need to eat a light diet and eat less salty, pickled vegetables and other stimulating foods. You can eat pears and kumquats to moisten and stop coughing and relieve coughing symptoms. 2. Heart and lung compression: In late pregnancy, the gradually increasing uterus will fill the abdominal cavity, causing the diaphragm to lift up, which may result in uterine compression of the heart and lungs. At this time, pregnant women will experience chest tightness, panic, or coughing, lack of breath and other symptoms. However, this symptom will be relieved as the expected delivery date approaches and the fetus gradually enters the pelvis. Pregnant women can adopt a left-sided position to alleviate the discomfort and usually need to pay more attention to rest and avoid strenuous activities as much as possible. 3. Respiratory tract infection: mainly severe cough caused by cold, bronchitis and chronic pharyngitis. Pregnant women need to seek medical attention in a timely manner. They can go to the hospital for blood tests to determine the specific cause of the severe cough, and then use drugs such as amoxicillin and busulfan anti-inflammatory oral solution for anti-inflammatory treatment under the guidance of a professional doctor; 4. Cardiogenic: Be alert to heart failure in late pregnancy, which can also cause irritating choking cough, accompanied by chest tightness, shortness of breath, and edema of both lower limbs, and other manifestations. Pregnant women need to go to the hospital in time to find out the cause of severe coughing, to prevent coughing from not being treated well, leading to serious consequences such as intrauterine distress of the fetus. Drink plenty of warm water, keep your mood relaxed, and try to eat a light diet to avoid spicy, greasy food that can irritate the throat and produce a cough.