Recurrent phlegm with low fever needs to be treated according to the specific cause, such as acute bronchitis, common cold, tuberculosis, pneumonia, etc. Choose general treatment or medication after clear diagnosis. 1. Acute bronchitis: During the attack of acute bronchitis, it can cause the phenomenon of low fever and recurrent phlegm. Antibiotic drugs such as cefixime and cefdinir can be chosen for treatment, together with drugs to dissolve phlegm and relieve cough, such as aminoglutethimide hydrochloride. In addition, you need to take physical cooling, drink more water. 2. Common cold: common cold can also cause low fever and repeated phlegm phenomenon, treatment can be prescribed to take aminophenol xuanamin granules to improve the symptoms, while with the phlegm and other drugs, such as aminobromine, eucalyptus pinocampus enteric capsules. 3. Tuberculosis: Tuberculosis can also lead to low fever and repeated phlegm, the treatment can choose anti-tuberculosis drugs, such as rifampicin, isoniazid, and with Ambroxol to resolve phlegm. 4. Pneumonia: Pneumonia can also cause low fever and repeated sputum, considering the bacterial infection, the treatment can choose sensitive antibiotics such as levofloxacin, azithromycin and other drugs; viral infection, choose targeted antiviral drugs, such as ribavirin, oseltamivir and so on. At the same time with the phlegm drugs, such as ambroxol hydrochloride, acetylcysteine. There are many reasons for low fever and repeated phlegm, after the symptoms, it is recommended to go to the hospital in time to improve the examination, under the guidance of the doctor to take medication, not to use drugs indiscriminately, so as not to lead to adverse consequences.