A routine blood white blood cell count of 12.5×10^9/L is relatively not serious and can usually be reduced to normal after treatment as prescribed by the doctor for the cause of the disease. The normal range of white blood cell count is 4~10×10^9/L. When the white blood cell count is 12.5×10^9/L, it is a mild elevation, which can be seen in acute infections (e.g., septic cocci, etc.), severe tissue injury or hemorrhage (extensive burns, major surgery), and acute intoxication (uremia, acute chemical poisoning). Ordinary acute infections, caused by mild elevation of white blood cells, the condition is relatively not serious, active anti-infective symptomatic treatment (cephalosporin or penicillin antibiotics), can be returned to normal. Massive burns, blood cell destruction caused by major surgery, acute poisoning, etc., resulting in elevated white blood cells, the condition is relatively more urgent, active infusion, blood transfusion and symptomatic treatment, can be slowly recovered. When the white blood cell count is mildly high, it is recommended to consult a doctor in time for a clear diagnosis and standardized treatment.