Serum amyloid more than 400 serious, need to be combined with the condition and other indicators of inflammation comprehensive assessment, the magnitude of the elevated value and the severity of the disease is not necessarily positively correlated with the other non-infectious diseases such as tuberculosis, tumors, etc., may also cause elevated, should pay attention to the identification. Serum amyloid (SAA) is an acute time-phase reactive protein produced by liver cells. Serum amyloid can rise rapidly within 48 to 72 hours of an acute bacterial or viral infection and decline rapidly during the recovery phase of the disease. The magnitude of serum amyloid elevation has a greater relationship with the type of infectious agent, the patient’s physical condition and other factors, so the clinical value of the significance of the need for a comprehensive analysis of the condition of the dynamic observation, and the severity of the disease is not necessarily a positive correlation. In addition, other non-infectious diseases such as tuberculosis, tumors, etc., may also cause elevated serum amyloid, if the value continues to rise and not drop, and the symptoms of infection improve, should be highly suspicious of such a situation, the need for further refinement of auxiliary examination, to clarify the cause of the disease.