How long an elderly person can live with pneumonia and recurrent fever is not certain, it is affected by the underlying condition of the elderly person and whether the treatment is active, if there is no underlying disease, the general condition is good and the treatment is active, the patient can reach the natural life expectancy, however, if the general condition is poor and the pneumonia develops into severe pneumonia, which causes respiratory failure and other complications, the patient’s life can be jeopardized at any time. Elderly people have weaker immunity and resistance, and recurrent fevers can occur after pneumonia occurs. Timely treatment with sensitive antibiotics and careful nursing care can help elderly patients recover and reach their natural life expectancy. If the recurrent fever of pneumonia in the elderly is not treated in time and effectively or if the elderly are in poor physical condition, etc., when the pneumonia develops into severe pneumonia, the patient’s respiratory function will be affected, which will cause symptoms such as shortness of breath and respiratory distress, and the mortality rate will be greatly increased. Some elderly patients may also suffer from respiratory failure, heart failure and other complications due to recurrent pneumonia fever, which can be life-threatening at any time if not treated in time. Therefore, elderly people with recurrent pneumonia fever should go to the hospital in a timely manner to avoid the development of the condition towards severe disease, with the help of a doctor to carry out regular treatment can make the patient infection control, reduce the risk of death caused by pneumonia in the elderly.