A high neutrophil ratio is not harmful in itself, but mainly due to the disease it causes. High neutrophil ratio is associated with physiological factors, acute infections, leukemia and other factors. Physiological factors are not harmful, but pathological factors may threaten health or even life if not treated in time. 1. Physiological factors: some people may suddenly have high neutrophils after a full meal or strenuous exercise, which are normal phenomena and require no special treatment, and are not very harmful to the human body. 2. Acute infections: such as infection with Staphylococcus aureus, hemolytic streptococcus, etc., these pathogenic bacteria may repeatedly stimulate the human organism, resulting in high neutrophils. If not treated in time, it may induce respiratory diseases, such as bronchitis and bronchopneumonia, which may lead to shortness of breath, dyspnea, and the risk of shock. 3. Leukemia: For example, in acute leukemia, high neutrophils will be detected during the examination; this disease belongs to a kind of malignant tumor, which is more harmful to human body, not easy to be cured, and can threaten the life. If the neutrophils are found to be high, it is recommended to consult a doctor as soon as possible and do bacterial culture and bone marrow aspiration under the guidance of a professional doctor to analyze the cause and then treat the symptoms.