First, it is necessary to identify the cause of leukopenia. Common causes include viral infections and poor bone marrow hematopoiesis, and some medications can also cause this condition. Therefore, symptomatic treatment mainly involves the use of medications that increase white blood cells. For mild leukopenia, oral medications commonly used include Li Xuesheng, squalene, and Vitamin B4 to promote the proliferation of white blood cells. In more severe cases, granulocyte colony-stimulating factors may be used. Of course, the main method of treatment still depends on the different causes of each patient. Once leukopenia occurs, it is necessary to go to the hospital for an examination to clearly determine the cause of the decrease in white blood cells, so that targeted treatment can be provided. (Please use medications under the guidance of a professional physician and do not self-medicate.)