C-reactive protein 9.5mg/L in young children is higher than normal and is often due to pathologic factors, such as septic infections, malignant tumors, connective tissue disease, etc. It is also seen in the active phase of rheumatic fever, etc. C-reactive protein is an acute time-phase reactive protein, synthesized by the liver, widely present in serum and other body fluids, with a normal reference value of <2.87 mg/L. Elevated C-reactive protein in young children is commonly seen in major surgery, severe trauma, burns, acute rejection of organ transplantation, malignant tumors, suppurative infections, connective tissue disease, etc. It can also be used to identify certain diseases, such as bacterial infections where C-reactive protein is often elevated, and also during the active phase of rheumatic fever. C-reactive protein 9.5mg / L in young children, there may be other reasons, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.