Heart failure should be heart failure. There is no definitive data on how long a patient with heart failure who vomits black water and does not eat can live. If the patient’s condition is serious and actively cooperates with the treatment, the general life expectancy may not be affected. If the condition is not controlled in time, it may affect the patient’s life expectancy, and in severe cases, sudden death may occur. Heart failure spitting black water without eating, if the patient’s health is better, spitting black water less, after the professional doctor to carry out active medication, the patient’s condition, symptoms can generally be effectively improved, is able to survive for a longer period of time. If the patient can not control the condition in time after medication or surgery, or even further deterioration of the condition, it may lead to respiratory failure and severe heart failure. At this time, the prognosis is poor, the survival time is relatively short, and more serious cases can be life-threatening or sudden death. Therefore, patients with heart failure who vomit black water and do not eat should be actively treated according to medical advice in order to improve the prognosis and reduce the adverse effects of the disease.