In general, redness, swelling, heat and pain are all inflammation, and the causes of inflammation include bacterial infection, viral infection, mycoplasma infection, etc. The normal range of leukocytes is (4-10)×10^9/L, and there is a reference value range behind the report, and exceeding the reference value range usually indicates inflammation. Inflammation is usually considered to exist when there is a bacterial infection, even if the white blood cells are not high, but the neutrophil ratio is >60%. The same is true for viral infections and mycoplasma infections. When a patient gets a routine blood report, it is important to communicate with the clinician to analyze the specific cause and whether there is a problem.