Frequent low fever and dizziness may be caused by colds, tuberculosis, autoimmune diseases, leukemia and other diseases. It is recommended to look for the cause and treat it actively. 1. Cold: poor immunity of the body, bacteria and viruses invade the body and cause fever. Cold also causes runny nose, sneezing, nasal congestion and dizziness. 2. Tuberculosis: Tuberculosis divergent bacilli infection, causing symptoms of tuberculosis poisoning, resulting in low-grade fever. Mycobacterium tuberculosis crosses the blood-brain barrier in the body and can cause dizziness, nausea, and vomiting if it produces tuberculous encephalitis and meningitis. 3.. Autoimmune diseases: such as rheumatoid arthritis, lupus erythematosus, and ulcerative bowel disease, which are associated with autoimmune system dysfunction. It may be accompanied by systemic multi-organ and functional damage, resulting in weakness, fever, dizziness. 4. Leukemia: The cause of leukemia is still unclear, and its symptoms involve the blood system, lungs or other organs. Leukemia patients suffer from bleeding and anemia, causing dizziness. Leukemia is a neoplastic disease that can cause tumor fever, leading to an increase in body temperature. Persistent low fever with dizziness, it is recommended to go to the hospital in time to clarify the causes of low fever and dizziness, targeted treatment.