C-reactive protein is not a direct judgment of whether to infuse treatment, should be combined with the patient’s other clinical manifestations and blood routine and other laboratory indicators comprehensive judgment. 1. In general, elevated C-reactive protein level can reflect the level of systemic inflammation and is a non-specific marker. 2. In clinical practice, routine blood tests and C-reactive protein tests are commonly used for joint diagnosis. However, routine blood test is easily affected by various factors such as patient’s mood. However, C-reactive protein is less affected by factors such as body physiology, less time-consuming and more sensitive. 3. Elevated C-reactive protein can be seen in a variety of reasons, not only in infections, but also in autoimmune diseases, malignant tumors and so on. Therefore, when C-reactive protein is elevated, it should be combined with clinical symptoms and examination to determine whether it is serious and whether it needs infusion therapy.