The head is a little cloudy may be caused by the following aspects: 1, if long-term mental stress, lack of sleep, long-term stay up late, there will be this symptom; 2, anemia or cerebral blood supply deficiency, there will also be a little cloudy head, you can go to the hospital to do a routine blood test, usually in the diet to pay attention to, eat more food to supplement the blood, if the condition is heavy, you can under the advice of the doctor 3, may be their own head cold caused by symptoms, usually pay attention to keep warm, especially when the weather is cool; 4, may be a typical neurasthenia, you can take the appropriate amount of tranquilizer under the advice of the doctor; 5, hyperthyroidism or liver and kidney function, can affect their brain, if long-term are in this situation, in order to avoid delaying the disease, it is recommended to go to the regular The hospital for medical consultation.