Most of the pneumonia does not need infusion treatment, but not necessarily 99%. After the diagnosis of pneumonia, appropriate drugs can be given according to the causative microorganisms for treatment as follows: 1, bacterial infection: oral cefixime, amoxicillin, azithromycin, levofloxacin, etc.; 2, viral infection: oral oseltamivir, abidol, lianflora clear plague capsule, etc.; 3, mycoplasma, chlamydia, legionella infection: oral levofloxacin, moxifloxacin, azithromycin, erythromycin etc. A small number of patients by oral treatment is ineffective, or when the condition is serious, can consider the treatment of infusion.