Mycoplasma pneumonia generally causes fever, but the duration of the fever varies depending on the patient's physical constitution and the severity of the illness. If the patient has a strong constitution and good resistance, the fever might improve within two to three days. However, if the patient has a weaker constitution and lower resistance, the fever might persist for four to five days, which should be noted. If mycoplasma infection is confirmed, treatment should be carried out under the guidance of a doctor with medications targeting mycoplasma. It is also important to maintain a light diet, avoiding spicy, greasy, cold, and irritating foods, ensure adequate sleep, and enhance resistance. Regular exercise can also help strengthen the body and promote recovery from the disease.