The length of time it takes from onset to death in white lung cannot be generalized and is closely related to the patient’s condition and treatment. White lung is a condition in which both lungs appear as white shadows over a full lung on a chest plain or chest CT image, when the inflammatory response over a large area of the entire lung lobe leads to compromised ventilatory function, severe hypoxia in the patient, poor prognosis and high mortality. White lung is mainly caused by an inflammatory storm triggered by a severe lung infection and can be accompanied by acute respiratory distress syndrome and pulmonary edema. If the infection is not promptly controlled or treated with respiratory support, patients can die in a short period of time, which may be hours or days. However, after aggressive and effective treatment, some patients can achieve a cure, even without sequelae, and can survive as long as normal. In addition, patients with white lung must be treated promptly with mechanical ventilation or even artificial lung support in order to gain time to find the cause of the disease, while hormone therapy may be given depending on the specifics of the lesion.