If the white blood cells are as low as 2.6×10⁹/L, which is much lower than the normal value, the body’s resistance will be drastically reduced at this time, which is usually more dangerous and needs to be considered in combination with other indicators. 1. When the white blood cells are lowered and often accompanied by obvious fever, it suggests the occurrence of infections, such as influenza virus, typhoid fever bacillus infection. 2. Various causes of splenomegaly and its hyperfunction, such as portal cirrhosis and lymphoma, often lead to neutropenia and leukopenia, and the white blood cell is as low as 2.6×10⁹/L. 3. 3. When accompanied by thrombocytopenia and erythrocytopenia, it suggests the emergence of hematologic diseases, such as aplastic anemia, megaloblastic anemia, etc., which are often more difficult to treat. It is recommended that one should do a good job of protecting oneself from infection in daily life. Go to the hospital in time for further examination to identify the cause of the disease and receive treatment under the guidance of the physician.