Dizziness as soon as you fall asleep is considered to be possibly related to otolithosis, vestibular neuronitis, Meniere’s disease and other factors. It is recommended that patients go to the hospital for examination and treatment after clarifying the cause of the disease. 1. Otolithiasis: refers to peripheral vertigo associated with changes in head movement, the cause of which is more complex, part of which is unknown, and part of which is related to neurological and ear diseases. When the head position changes suddenly after the body becomes lying down, severe vertigo or dizziness will occur, accompanied by nystagmus, nausea, vomiting and other symptoms. 2. Vestibular neuronitis: Sudden vertigo caused by damage to vestibular neurons, the cause of which is still unclear and may be related to viral or bacterial infections. Patients will experience sudden vertigo and nystagmus, accompanied by nausea, vomiting and other symptoms, so patients with vestibular neuronitis may also experience dizziness once lying down. 3. Ménière’s disease: a kind of auricular vertigo disease, the etiology of which is still unclear and may be related to the imbalance of endolymph production and absorption. Clinical manifestations of vertigo, hearing loss, tinnitus, ear stuffiness and other symptoms, vertigo symptoms will be aggravated when the position changes, so the patient will appear to lie down on the performance of dizziness. Dizziness when sleeping may also be caused by other reasons, it is recommended that patients go to the hospital in time to identify the cause of the disease, targeted treatment, so as not to affect the health. Avoid spicy and stimulating foods, eat a light diet, and eat more fruits and vegetables.