The length of life in heart failure at the age of 35 depends on a number of factors, including the severity of the patient’s condition, individual circumstances, and the type of treatment. With proper treatment, some patients can survive for 20-30 years. Clinical heart failure, or cardiac insufficiency, can be caused by a variety of etiologies and is often a terminal complication of the disease. Patients with heart failure at the age of 35 can go to the hospital for electrocardiogram, cardiac ultrasound, coronary angiography CTA and cardiac stress test to assess the patient’s heart failure level classification. The next step of treatment will then be based on the results. If the patient actively cooperates and the treatment is effective, his or her survival period can be extended to 20-30 years. Therefore, it is recommended that patients should not be overly nervous and should go to the cardiology department of the hospital in a timely manner when discomfort occurs and actively cooperate with the doctor for treatment.