The normal range of Ultra-sensitive C-reactive protein is 0.5~10mg/L. Ultra-sensitive C-reactive protein is 121.7mg/L, which may be due to the occurrence of infections or autoimmune diseases in the body, leading to the occurrence of increased Ultra-sensitive C-reactive protein. 1. Infection: Generally, the increase of ultra-sensitive C-reactive protein occurs when there is a bacterial infection in the body, such as acute tonsillitis, acute pharyngitis, etc., which can be treated with medication, such as cephalosporin, penicillin and other antibiotics. 2. autoimmune disease: some autoimmune diseases may also cause high ultra-sensitive C-reactive protein, such as rheumatoid arthritis, systemic vasculitis and other diseases may cause ultra-sensitive C-reactive protein increased. There may also be other reasons for the increase in ultra-sensitive C-reactive protein, which should be examined and treated in a hospital. The above drugs should be treated under the guidance of a doctor, and should not be used indiscriminately, so as not to cause delays in the condition.