Pig’s trotters to raise white blood cells is no scientific basis, eating pig’s trotters usually have no obvious role in raising white blood cells. The main components of pig’s feet are protein and fat, the human body can increase nutrition after eating. But for people with low white blood cells, eating pig’s feet has no obvious role in raising cells, because pig’s feet can’t promote bone marrow cell proliferation in the granulocyte system. Leukemia, myelodysplastic syndrome, myeloma, rheumatoid arthritis, dry syndrome, hypersplenism, hyperthyroidism, viral hepatitis and many other diseases may lead to leukopenia, cytarabine, hydroxyurea and other chemotherapeutic drugs, as well as anti-inflammatory drugs, such as levofloxacin and amoxicillin, may also lead to leukopenia. Therefore, patients with leukopenia need to go to the hematology department in time to improve the relevant examinations to clarify the specific causes of the disease, and then follow the medical advice for the cause of the disease.