A bedridden elderly person with a fracture develops a lung infection and may have a pleural effusion. If an elderly person has a fracture and is bedridden for a long period of time, due to the weakness of the elderly, their activity level may be low, which may easily lead to lung infection and cause coughing. In addition, due to the elderly long-term bedridden, there may also be bruising in the lungs, phlegm is not easy to discharge and other conditions. With all these factors, the elderly are likely to have pleural effusion. However, minor pleural effusion can be self-absorbed after treatment and does not require treatment. When a bedridden elderly person with a fracture develops a lung infection, it is recommended that he/she take into account the diagnosis and treatment advice of a medical professional to determine whether treatment is needed. If the pleural effusion is small, it is necessary to actively cooperate with the treatment and go to the hospital regularly for rechecking to clarify the absorption of the pleural effusion. If the pleural effusion is more, it is necessary to cooperate with the doctor in time for surgical drainage.