Low fever is a common clinical symptom, and a variety of causes can cause low fever. Specifically: 1, rheumatic diseases, tuberculosis, chronic inflammation, tumors, immune deficiency, blood diseases, etc. can cause persistent low fever, rheumatic patients should be given anti-rheumatic, fever clearing and anti-inflammatory treatment; tuberculosis patients must be given anti-TB drugs; other tumors, immune deficiency, such as tumors must be given anti-tumor targeted drug therapy, immune deficiency must be given to actively increase immune aspects 2. Long-term psychological tension and emotional instability can also cause central temperature disorders, resulting in a persistent low fever; at this time, the problem is found to identify the cause and give symptomatic medication; for patients with psychological tension and emotional instability and central nervous disorders resulting in low fever, it is necessary to do active psychotherapy to stabilize, regulate and stabilize emotions, and at the same time, let The patient should pay attention to rest, relaxation, strengthen the diet, strengthen immunity, and give anti-viral infection Chinese medicine treatment, which can also relieve the symptoms of low fever.