The baby’s white blood cell count of 22 x 10⁹ cells/L is a significant increase in white blood cells, and the need for hospitalization depends on the specific situation. If there is no other symptom or accompanied by respiratory symptoms, can be observed at home; if accompanied by other symptoms, should be hospitalized for observation and treatment. Normal values for white blood cell counts are (15-20) x 10⁹ cells/L for newborns, (11-12) x 10⁹ cells/L for 6 months to 2 years old, and 8 x 10⁹ cells/L for 4 to 14 years old. 22 x 10⁹ cells/L is a significantly high white blood cell count. significantly high. 1. If the baby has no other symptoms, or accompanied by respiratory symptoms, such as coughing, coughing up sputum, etc., it may be a respiratory infection caused by leukocytosis, you can observe at home or take antibiotics such as amoxicillin, such as the worsening of the symptoms to seek prompt medical attention. 2. If accompanied by abdominal pain, nausea, vomiting and other gastrointestinal symptoms, may be organ infection caused by leukocytosis, need to be admitted to the hospital for examination to determine the cause of the disease in order to carry out the next step in the treatment. If accompanied by hematologic symptoms. Such as anemia, bleeding, etc., it may be a blood system disease, need to be hospitalized for puncture, etc., to determine the cause of the disease. All of the above medications should be used under the guidance of a doctor, avoid self-medication.