In late pregnancy, there are many different causes of headaches. The more common ones are poor rest and poor sleep, which lead to disturbance of the plant nerve function and cause headaches. When this happens, you should try to keep your mood relaxed, not to be too nervous, and try to pay attention to rest to improve the headache phenomenon. Pregnant women with colds, cold or sudden cold air stimulation may also cause headaches. It is also possible that in late pregnancy, the blood pressure of a pregnant woman may increase, thus causing a headache. It is necessary to promptly check the temperature and blood pressure to determine the cause and then take symptomatic treatment. If there is a high body temperature, it means that the headache is caused by fever, you can take physical cooling by taking a warm bath or a warm shower. After the body temperature is brought down to normal, the headache can be improved. However, if the headache is caused by high blood pressure, you need to take antihypertensive medication in time to relieve the headache caused by increased cranial pressure.