High ultrasensitive C-reactive protein generally indicates an inflammatory reaction in the body. An increase in white blood cells generally indicates a bacterial infection, but if the white blood cells are normal, the bacterial infection can be excluded, so when the ultrasensitive C-reactive protein is high but the white blood cells are normal, it indicates an inflammatory reaction in the body, but it is not caused by a bacterial infection, but may be due to other causes of inflammation. In addition to bacterial infections, hypersensitivity C-reactive protein is also seen in viral infections and can be seen in myocardial infarction, malignant tumors, surgical trauma, and tissue damage caused by trauma. Elevated ultrasensitive C-reactive protein cannot be used directly for disease diagnosis, but it can be used as a reference for clinical diagnosis and treatment, and the specific clinical significance should be judged according to the patient’s condition. If a patient has cough and sputum, combined with elevated ultrasensitive C-reactive protein, it should be considered whether it is caused by respiratory tract infection. If the patient has symptoms of urinary tract irritation, combined with elevated ultrasensitive C-reactive protein, the presence of urinary tract infection can be considered.