The number of leukocytes and neutrophils in the peripheral blood is lower than the normal range, and according to the number of neutrophils, there are mild, moderate and severe hypotension. 1. The fatigue is obvious after mild activity, and the symptoms of sore throat and fever are easy to appear after strenuous exercise, so it is necessary to take more rest and appropriate drugs to raise the white blood cells. 3. If it is severe hypotension, especially when the neutrophils are below 500/ml, the patient’s fatigue will be very obvious, and high fever, accompanied by chills, chills, stomatitis, pharyngitis, and even pneumonia will easily appear. At this time, it is necessary to go to the hospital for bacteriological examination, apply granulocyte stimulating factor to elevate the white blood cells, and at the same time, according to the bacteriological examination and drug sensitivity test, give sensitive antibacterial drug treatment.