The difference between ordinary fever and leukemia fever lies mainly in the cause of fever, laboratory tests, fever type, clinical manifestations and treatment methods, etc. 1. cause: ordinary patients with fever are mostly infected with bacteria and viruses after cold and exertion, resulting in fever symptoms; leukemia patients with fever are mostly infected due to abnormal immune system, causing high fever, or tumor metabolism leading to a rise in body temperature resulting in hypothermia; 2. Laboratory tests: in common patients with fever, laboratory test results show elevated white blood cell count and elevated neutrophils; in leukemia patients with fever, laboratory test results show abnormal red blood cell, white blood cell and platelet counts; 3. The fever type of leukemia patients is often retention fever, also called periodic fever; 4. clinical manifestations: ordinary patients with fever show chills, chills, sweating, nasal congestion, cough, sore throat, etc., and more symptoms of the upper respiratory tract; leukemia patients show pallor, dizziness, fatigue, skin mucous membrane bleeding and other systemic symptoms; 5. treatment: ordinary fever can be treated with antibiotics, anti-infective treatment can usually be cured; leukemia patients with fever should be treated according to the cause of anti-infection and leukemia. Note: Daily attention to drink more water to speed up metabolism, which helps to reduce body temperature. The fever will slow down the gastrointestinal motility, so the diet should be light and easy to digest, and eat less spicy and stimulating food to avoid stimulating the stomach and intestines and aggravating the disease.