Low white blood cell count of 2.0 may be caused by the cold itself or medication, and should be treated according to the different causes of the disease. 1. Cold and flu itself: when there is a cold and flu caused by viral infection, there may be a decrease in white blood cells, and when the disease improves, the white blood cells will return to normal. 2. Drugs: There are many drugs that cause low white blood cells, such as sulfonamide anti-inflammatory drugs, which can effectively inhibit the regeneration of white blood cells and cause colds with low white blood cells of 2.0. When this symptom occurs, you can use shark liver alcohol tablets and Ricochet tablets under the guidance of a physician to treat the symptoms, and at the same time, stop using anti-inflammatory drugs. It is recommended that when the white blood cell is low 2.0, you should go to the hospital in time to find out the cause of the disease, symptomatic treatment. Drugs need to be used under the guidance of a professional physician, do not use drugs at will.