Pregnant women with dry cough without sputum, especially serious at night, if caused by respiratory tract infection, should be timely anti-infection treatment; if caused by allergic bronchitis, should be timely anti-allergy treatment. 1. Respiratory tract infection: If pregnant women are cold and tired, they are prone to infection and bronchitis. If combined with fever, it may also be pneumonia. At this time, you should consult a doctor for examination to clarify the cause of the disease. If it is a bacterial infection, you can use amoxicillin and other treatments under the guidance of the doctor; if it is a viral infection, you can use Pudilan anti-inflammatory oral solution and other treatments. 2. Allergic bronchitis: Pregnant women with a dry cough without sputum, especially at night, may also be associated with allergic bronchitis. In this case, you should consult a doctor in time and use drugs such as salbutamol under the guidance of the doctor. It is also important to avoid contact with allergens. In addition to this, the pregnant woman herself, with the prolongation of pregnancy, the fetus gradually becomes bigger and bigger leading to the diaphragm of the abdominal cavity to rise, which will increase the burden on the heart and lungs, and will also cause coughing. At the same time, pregnant women must be cautious and careful when taking medication and take medication under the guidance of a doctor.