The different shapes of temperature curves formed by routinely measuring the body temperature of a febrile patient and marking it on the temperature chart are known as heat patterns. Heat pattern is one of the manifestations of the interaction between pathogenic factors and the body, and many febrile diseases have a relatively specific heat pattern, so a typical heat pattern is valuable for disease diagnosis. Most of them are associated with primary illnesses that affect the body’s defense function, and there are more cases of hospital-acquired infections. Chills, high fever, profuse sweating, and a bimodal fever pattern are more common, and occasionally a trimodal fever pattern, which is rare in sepsis caused by other pathogens, should be taken seriously. How to prevent the triple fever type? 1, strengthen the health care work during the sanitary period, prenatal should be guided by the secretion examination, such as culture found group B hemolytic streptococcus should be timely treatment, so as to avoid the infection of the newborn. 2, the neonatal ward, burn ward and those receiving chemotherapy for leukemia or bone marrow transplantation should take protective isolation to prevent the occurrence of drug-resistant Staphylococcus aureus and Pseudomonas aeruginosa and other hospital-acquired infections. Chronic Staphylococcus aureus carriers should be temporarily transferred and given treatment, and those with obvious or hidden foci of infection must be treated promptly. 3.The catheter left in the body should be changed regularly, and if there is infection, it should be removed in time and treated with antibacterial drugs. 4.People who are closely exposed to radiation or benzene (high-risk group) should be examined regularly. 5.Patients taking drugs that may cause granulocytopenia should be closely followed up. 6, chronic leukopenia patients, long-term follow-up if the blood image is stable can not take drugs. For patients with low white blood cell count and symptoms, 1-2 of the drugs can be used, such as Lixisen, Salvianol and Vitamin B4. 7.For the sudden onset of granulocytopenia or deficiency, it should be sent to the hematology department for resuscitation. 8.Avoid overexertion; pay attention to the change of climate, increase or decrease clothing in time to prevent the onset of external evil.