Elderly people present with inflammation of the lungs and recurrent fever. First of all, you need to clarify the type of lung inflammation, to check the blood routine and mycoplasma antibodies. If there are elevated leukocytes in the blood count, it means that it is bacterial inflammation, and this time it is necessary to give the elderly intravenous antibiotics to carry on the treatment. Cephalosporin antibiotics, such as ceftriaxone or cefoperazone, are commonly used. If there is no elevated white blood cell count and positive mycoplasma antibody, it means that the lung inflammation is caused by mycoplasma infection, which needs to be treated with intravenous macrolide antibiotics, such as azithromycin or erythromycin. Erythromycin is a strong stomach irritant and should be given at a slow drip rate. If the mycoplasma antibody is negative and the white blood cell count is not elevated, the infection is viral and can be treated with injections of Cipro. If the fever is recurrent, it will soon disappear with effective anti-inflammatory treatment. In addition, when the body temperature is over 38.5 ℃, you need to take fever-reducing ibuprofen to reduce fever.