Lying down without dizziness walking dizziness is considered to be caused by anemia, postural hypotension, benign paroxysmal positional vertigo, cerebellar infarction and other diseases. 1. Anemia: anemia is usually caused by the lack of vitamins or hematopoietic function, anemia due to a decrease in the content of hemoglobin in the body, resulting in insufficient oxygen to the organs, caused by the lack of oxygen to the brain, dizziness, fatigue, fatigue and other symptoms. It can be manifested as dizziness when getting up, and the symptoms can be relieved when lying down. 2. Postural hypotension: It is a kind of blood pressure abnormality, in which the patient has black haze, dizziness, fainting and other symptoms after standing up quickly, and it will not appear in supine position. It is mostly seen in frail patients or patients with autonomic dysfunction, such as multiple system atrophy. 3. Benign paroxysmal positional vertigo: vertigo is easy to appear when the position of the patient’s head changes, such as when getting up or lying down, and is usually accompanied by nausea, vomiting and other symptoms. 4. Cerebellar infarction: When cerebellar infarction occurs, due to the influence of ataxia, the patient may show dizziness when lying down, but dizziness when getting up and moving around. There are many reasons why people do not feel dizzy when lying down and walking, so it is recommended to go to regular hospitals in time for examination and treatment under the guidance of professional doctors after clarifying the causes of the disease.