Hypertrophic cardiomyopathy does not usually affect the patient’s life expectancy, but sudden death may occur in a small number of patients. Hypertrophic cardiomyopathy is a heart disease characterized by myocardial hypertrophy, which usually occurs in the left ventricle. The main causes of the disease include genetic factors and sympathetic nerve abnormalities. It can cause symptoms such as dyspnea and weakness. It is usually treated with drugs such as calcium antagonists like verapamil or surgery. Hypertrophic cardiomyopathy can be controlled and relieved by systemic therapy and generally does not affect the patient’s life expectancy. However, patients with worsening symptoms, sustained ventricular tachycardia, and a family history of sudden death are at greater risk of sudden death, which is more common in children and young adults. If you have hypertrophic cardiomyopathy, please take active treatment under the guidance of your physician, adhere to the medication, and have regular checkups, which will not affect your life expectancy.