The causes of dizziness, sweating and weakness are mainly the following: 1. Fever. Fever caused by diseases such as acute upper respiratory tract infection and pneumonia can be accompanied by headache, chills, cough, dizziness, more sweating, weakness and other symptoms. More sweating can cause hyponatremia and symptoms such as weakness, which can be relieved by drinking more water and taking light saline orally, while identifying the cause and treating it for the cause. 2. Heat stroke. Related to the hot weather, high-temperature work, etc., caused by dehydration in the body, can appear dry mouth, high fever, sweating, dizziness, weakness and other symptoms. 3, Chinese medicine believes that the symptoms of dizziness, sweating and weakness are related to physical weakness, such as after a serious illness, after childbirth, just after surgery, etc. The above symptoms, drink more water, it is best to go to the hospital for further examination to confirm the diagnosis, find out the cause of the right treatment, timely replenishment of fluids to avoid causing water-electrolyte disorders.