Standing up and dizziness lying down is fine, considering that it is caused by low blood pressure, if it happens frequently, it may be seen in multi-system atrophy disease, it is recommended to consult the hospital for head magnetic resonance examination, to clarify the cause of the disease. When you get up, you can measure your blood pressure, and when you lie down, you can measure your blood pressure again. If the difference in blood pressure is more than 20mmHg, it is considered to be caused by postural blood pressure changes, and you can drink more pulse drink and Astragalus jujube water to improve your blood circulation and physique, and the symptoms may be improved. If it is considered to be caused by multi-system atrophy, it may need to be treated with drugs such as lithopanax and mephedrone, as well as wearing compression stockings to reduce the symptoms of dizziness when standing up.