Dizziness and weakness with no energy may be caused by physiological factors, such as lack of sleep, pregnancy, etc.; it may also be caused by pathological factors, such as anemia, hypoglycemia, cerebral arteriosclerosis, hepatitis, liver cirrhosis, etc.: I. Physiological factors: 1. Sleep deprivation: When patients stay up late or have poor sleep quality, it may cause the phenomenon of dizziness and weakness to appear. Generally after rest, the symptoms will improve; 2, pregnancy: most pregnant women in pregnancy will appear dizziness, dizziness, weakness and no energy symptoms, belong to the early pregnancy reaction, can strengthen nutrition, more rest. Pathological factors: 1, anemia: anemia often has symptoms such as dizziness, weakness, pale face and lips, tinnitus, etc. It is common in children, pregnant women and weak people. It is recommended to check the cause of anemia at the hospital, treat the symptoms, correct the primary disease, and improve the patient’s symptoms; 2. Hypoglycemia: When the patient has hypoglycemia, it will cause insufficient blood supply to the brain, which will cause the phenomenon of dizziness and weakness without energy. In mild cases, the symptoms will improve after taking oral sugar cubes or eating sweets, and in severe cases, it may be necessary to go to the hospital for intravenous infusion to correct hypoglycemia; 3, cerebral arteriosclerosis: cerebral arteriosclerosis will cause insufficient blood supply to the brain and slow blood flow in the cerebral arteries, resulting in dizziness, weakness, slow thinking and hemiplegia, etc. It is recommended that patients go to the hospital for examination and treatment in a timely manner to reduce the occurrence of complications; 4, hepatitis Cirrhosis: Hepatitis, cirrhosis patients commonly show dizziness, weakness and lack of energy, which is due to the liver metabolism, detoxification function is damaged, resulting in toxins can not be discharged, accumulate in the body caused by a series of symptoms; patients can light diet, pay attention to rest, keep the mood happy, with treatment, etc.. If dizziness and weakness are not relieved after rest and other symptoms appear, it is recommended to go to the hospital to find out the cause and treat the symptoms according to the cause so as not to delay the disease. Daily diet can eat more iron-rich and vitamin-rich food, pay attention to ensure sufficient sleep time, avoid overexertion, reduce the triggering factors.