How long it takes to get well from double pneumonia can range from a few days to a few weeks, or longer. It needs to be analyzed on a case-by-case basis. 1. If the pneumonia is mild, the lesions are only confined to the lungs, and there is only inflammation and no complications, after symptomatic treatment, the symptoms may be gradually relieved and slowly recovered in a few days to a few weeks. 2. If the lesions are diffusely distributed in the lungs, resulting in extensive damage to the lungs or even damage to the function of other organs, the difficulty of treatment in this case will be significantly increased, and the treatment time will be significantly extended, requiring more than a few weeks. How long can pneumonia be cured, there is no absolute time standard, different people with different conditions will be different, to be analyzed on a case-by-case basis.