There are many reasons for dizziness at night, including hypertension, cerebral artery insufficiency, postural hypotension, etc., as follows: First, hypertension: check whether there is hypertension, hypertension is the most common cause of dizziness and headache, especially in middle-aged and elderly friends, it is recommended to measure the blood pressure. Second, cerebral artery supply deficiency: cerebral artery supply deficiency is mostly seen in middle-aged and old friends who suffer from long-term hypertension, hyperlipidemia, diabetes, and smoking, at this time, you can go to the hospital neurology department to do a transcranial Doppler examination to assess the cerebral blood supply. If the cerebral blood supply is insufficient, you can take some drugs, such as blood and brain particles to relieve. Third, postural hypotension: see if the patient has postural hypotension, also need to measure blood pressure. Fourth, other: anemia, the patient often insomnia, etc., can lead to dizziness at night.