Pregnant women often have headaches mainly consider the following reasons: 1, if the patient is in the first trimester of pregnancy headache, may be one of the pregnancy reaction, but if after three months, the patient’s headache symptoms still have not improved, consider other causes; 2, cause pregnant women often have headaches, mainly with the patient is not enough rest, the body is too fatigue related, patients may also be more nervous, stress-related tension headache; 3, pregnant women often have headaches should also be considered anemia or hypotension caused by the diagnosis of the cause of the symptomatic, The patient may also have tension headache caused by mental tension and stress; 3. Pregnant women with frequent headaches should also be considered to be caused by anemia or low blood pressure, and it is recommended that the patient should consult a hospital for examination in a timely manner to confirm the diagnosis and carry out symptomatic treatment for the cause; 4. Pregnant women with frequent headaches may also have functional headaches such as migraine.