Broadly speaking, all diseases that cause fever as the main symptom can be seen in the fever clinic, and then the fever clinic specialists will take the patient’s history and conduct a detailed examination, and conduct a preliminary examination to find out the cause of the fever, in order to make a further diagnosis. Common cold, acute bronchitis, lobar pneumonia, seasonal infectious diseases such as influenza, typhoid fever, paratyphoid fever, chicken pox, measles, rubella, dengue fever, and even rare diseases with fever symptoms, such as hemophilic syndrome, are the most common cases of fever in the clinic. There are also non-infectious fevers, including rheumatic fever, serum sickness, drug fever, connective tissue disease, hyperthyroidism, etc. For clarification of the specific etiology, further triage is required. It is recommended to go to a specialist for further treatment, for example, for non-infectious fevers, after the cause of the disease has been identified, it is necessary to go to the appropriate specialist for targeted treatment.