Sleeping dizziness and heavenly rotation may be caused by insufficient cerebral blood supply, cervical spondylosis, otolithosis and other factors. 1. Transient cerebral ischemic attack: The patient himself has some underlying lesions, such as hypertension, hyperlipidemia and so on. When sleeping at night, slow blood flow and increased viscosity can lead to transient ischemic attack, and it is easy to have dizziness symptoms. 2. Cervical spondylosis: it may be related to factors such as working at desk for a long time and playing with cell phone for a long time. Improper posture while sleeping can make cervical spondylosis aggravate, which will cause compression of sympathetic nerves and vertebral arteries, and dizziness symptoms will occur. 3. Otolithiasis: when there is otolithiasis, in the process of sleeping position change, the otolith is easy to fall off, there will be dizziness, but the duration will not be too long, may also be accompanied by nausea and vomiting and other symptoms. Sleeping dizziness can also be seen in other causes, it is recommended to consult a doctor for timely examination and treatment, so as not to delay the condition.