A low neutrophil percentage of 37.1 should be treated with anti-infective therapy if there is an infection, treatment of the primary disease if there is an underlying disease, and staying away from the environment if the injury is caused by physical or chemical damage. The normal range of neutrophils is 50% to 70%, and 37.1% of neutrophils is low. 1. The causes of low neutrophils may include physical injury (such as long-term exposure to radiation), chemical injury (such as long-term exposure to chemical substances such as benzene, lead, mercury, etc.), infections (typhoid fever, paratyphoid fever), use of certain drugs (antitumor drugs, antithyroid drugs), autoimmune diseases or blood diseases (SLE, reattachment), and so on. 2. For those who have infection, anti-infection treatment, cephalosporins or quinolones can be used; for those who have basic diseases, treatment of primary diseases, stem cell transplantation or immunosuppressant treatment; for those who are caused by the use of drugs, according to the condition of the patients, they should choose to stop the drugs or switch to other drugs that will not reduce neutrophils; for those who are caused by physical or chemical injuries, they should stay away from the injured environment. 3. Low neutrophils can also be caused by other reasons. When low neutrophils occur, it is necessary to go to the hematology department of the hospital for timely treatment. Doctors will conduct a systematic examination based on clinical symptoms and past medical history, make a clear diagnosis based on the results of the examination, and then carry out standardized systematic treatment. Do not blindly self-medicate.