Recovery from a lung contusion takes about 2 to 3 days or 1 to 2 weeks, or even about 1 to 3 months in severe cases. The exact time needed is related to the severity of the condition 1.2~3 days: If the lungs show just a slight oozing phenomenon on CT, the symptoms may be mild, and you may basically recover in about 2~3 days. 2.1~2 weeks: If there is fluid or inflammation in the chest area, it may take about 1~2 weeks for the lungs to return to normal. 3.1~3 months: If the symptoms of lung contusion are particularly serious and there is a rib fracture or lung infection, it is possible that the condition may also need to be alleviated by means of surgery, and the recovery time of lung contusion in this case will be around 1~3 months. It is recommended that lung contusion patients seek medical attention in a timely manner to avoid delaying their condition.