For patients with low immunity are very prone to fever symptoms, even like the common cold is likely to be complicated by fever. The reason is very simple, due to low immunity, the body of the external pathogen invasion resistance will be weakened, such as exogenous fever-causing sources, such as bacteria, viruses, microorganisms, when the invasion of the body, such patients are very easy to complicate the emergence of infection. Even with tuberculosis, tumors, rheumatism and other diseases, these diseases tend to recurring fever, and the general effect of drug treatment is also poor, so we must clarify the cause in time, timely treatment for the cause, but also to strengthen the immune regulation aspects of the treatment. It is also recommended that if the immune system is low, you must pay attention to dietary enrichment, but also appropriate to strengthen their own exercise, to enhance resistance and immunity.