There are many causes of weakness, dizziness and weakness in the legs, which should be clarified by examinations related to the patient’s accompanying symptoms: 1. If the patient is an elderly person with severe cerebrovascular stenosis and insufficient blood supply to the brain, he or she will show dizziness, dizziness, weakness and weakness in the legs, and also hypertensive diseases. 2. The symptoms of the disease, such as intrapulmonary infection with a body temperature of 38.5°C or higher, may cause patients to experience dizziness, dizziness, weakness of the legs, and fatigue. 3. If the patient is suffering from nausea, vomiting, diarrhea, or dehydration, he or she may also exhibit dizziness, dizziness, and weakness of the legs due to insufficient blood volume. 4. Some systemic diseases, such as anemia, hypotension, and chronic cardiac insufficiency, may also cause Patients have the above symptoms.