How long a patient can live after acute liver failure depends on the comprehensive factors such as the presence or absence of underlying diseases, the strength of immunity and life and rest, etc. Most of them have a good prognosis and do not affect their life expectancy after successful treatment and proper recuperation. Acute liver failure is caused by the rapid decline of liver function and serious disorder of metabolic function of the body due to multiple etiologies, which leads to the death of the patient. The prognosis for patients with acute liver failure is poor. If the patient’s condition is mild and the treatment is timely, liver function can be restored after the primary disease is successfully rescued and controlled, and the patient can have a long survival period. However, the majority of patients with liver failure are more severe and unable to control the primary disease, such patients have a life-threatening condition and often have a survival period of less than one month. With the continuous development of medical technology in recent years, the causes of acute liver failure can be detected as early as possible, allowing many patients to reach a stable condition or even be cured. In addition, in daily life, patients with acute liver failure should pay attention to rest, reduce activities, and eat a light diet, not to eat too greasy, spicy, stimulating food to ensure smooth bowel movements.