Low white blood cells caused by colds are mostly due to viral infections or oral intake of certain medications. Different treatments should be taken according to different causes, including general treatment and medication. 1. The lowering of white blood cells caused by colds is mostly due to viral infections, with neutropenia as the main cause, and the white blood cells can return to normal after the condition improves. Patients should pay attention to rest at home, drink more water, prohibit spicy and stimulating food, and maintain air circulation. If it is caused by influenza virus, oral oseltamivir can be taken at an early stage. 2. Low white blood cells in the flu can also be caused by taking antipyretic drugs such as acetaminophen or drugs such as chloramphenicol, which should be stopped immediately and seek medical attention in time. If the white blood cells are significantly reduced, under the guidance of the doctor, can be dealt with through the oral white drugs, such as diyu ascending white tablets, etc., if necessary, to the subcutaneous injection of human granulocyte stimulating factor. Low white blood cells in colds can also be seen in other diseases, such as hematologic diseases. If you have a low white blood cell count, it is recommended that you consult a doctor in a timely manner and follow the doctor’s instructions for treatment.