Patients often have headache, dizziness, nausea symptoms, the main consideration of the following aspects of the cause: 1, to consider the functional nature of the cause, such as patients with migraine, muscle tension headache attacks; 2, to consider the symptoms caused by systemic diseases, such as dizziness, headache, nausea due to high blood pressure, or dizziness, headache, nausea caused by hypoglycemia. However, when hypoglycemia is present, the patient may also suffer from panic, sweating and other symptoms; 3, it is necessary to consider that it may be related to psychosomatic factors, such as the patient’s prolonged emotional anxiety, nervousness, and poor sleep can easily be induced; 4, the patient often suffers from headache, dizziness and nausea, and if the symptoms gradually progress and worsen, the patient should also be considered to be the result of tumors and occupying nature factors. This kind of situation is generally more serious, and it is necessary to improve the examination of head CT and head MRI in time to make it clear, and actively treat it.