There are two types of headache, one is physiological and the other is pathological. 1.Physiological phenomenon is mainly when the patient has a bowel movement, the pressure in the abdominal cavity will increase, the pressure in the abdominal cavity will increase the intracranial pressure, there will be a headache caused by increased intracranial pressure, the patient’s blood pressure is normal and unnecessary to care, belongs to the normal physiological phenomenon. 2.Pathological phenomenon The phenomenon is the patient in the measurement of blood pressure when the blood pressure is elevated, it is recommended that patients can take oral antihypertensive drugs for treatment before defecation.