Nine-year-old doll is always dizzy may be caused by lack of sleep, abnormal blood pressure, anemia and other reasons. 1. lack of sleep: if the nine-year-old doll learning pressure, the night also often stay up late, can not guarantee sufficient sleep time or sleep quality is reduced, etc., there may be always dizziness. 2. blood pressure abnormalities: if the nine-year-old doll often dizziness, and position-related, such as standing up from the squatting position often dizziness, may be related to blood pressure abnormalities, such as the child has erectile hypotension. 3. Anemia: If the nine-year-old doll usually eat always picky, poor appetite, may suffer from anemia, the child may appear always dizziness, often accompanied by skin, mucous membrane pallor. Nine-year-old doll always dizzy may also be myopia, hyperopia, allergic rhinitis and other causes. If the child is always dizzy, it is recommended to consult a doctor in time, under the guidance of the doctor, improve the relevant examination, to clarify the cause of the disease, for treatment.