Dizziness in the middle of the night may be caused by cervical spondylosis, cold, anemia and insufficient blood supply to the brain. 1. Cervical spondylosis: If you sleep in an incorrect position at night, such as when your pillow is too high, which causes cervical spondylosis, dizziness, vertigo and numbness of the limbs will occur. Or when getting up in the middle of the night due to changes in body position, dizziness will also occur. 2. Cold and flu: cold and flu at night due to cold and other reasons, can appear nasal congestion, affecting the inhalation of oxygen, thus appearing dizziness symptoms, but also accompanied by headache, sore throat and other symptoms. 3. Anemia: when the hemoglobin content in the blood decreases and the ability to carry oxygen decreases, it will lead to insufficient supply of oxygen to the tissues, resulting in a state of tissue hypoxia, which will lead to dizziness in the middle of the night, weakness and other symptoms. 4. Insufficient blood supply to the brain: blood viscosity increases at night, and the circulation of cerebral arteries is restricted, which easily leads to insufficient blood supply to the brain, resulting in dizziness in the middle of the night, weakness and other symptoms. When the symptoms of dizziness in the middle of the night appear, it is recommended that patients go to the hospital in time for examination and diagnosis, and under the guidance of the doctor to carry out the appropriate treatment.