Whether cardiac hypertrophy is life-threatening depends on the cause of the hypertrophy, its severity, and the combination of other underlying diseases. Left ventricular hypertrophy due to hypertension is usually not suddenly life-threatening, and patients can usually control their blood pressure well. ACEI drugs such as captopril are preferred for hypertension and have the function of delaying or reversing left ventricular hypertrophy while actively controlling blood pressure. However, if the patient belongs to hypertrophic cardiomyopathy resulting in cardiac hypertrophy, it may be life-threatening, and such patients are prone to heart failure, malignant arrhythmias and sudden cardiac death. However, if patients with cardiac hypertrophy can control the primary disease in time and receive regular treatment, their condition will not be life-threatening after stabilization. Patients with cardiac hypertrophy should pay attention to avoid overexertion, prevent infection, and take regular medication as prescribed by the doctor.