Hypertrophic cardiomyopathy can be detected at an early stage. The disease is not specific in terms of early symptoms, but it can be diagnosed by echocardiography and electrocardiogram. Hypertrophic cardiomyopathy can be found in the early stage with symptoms such as exertional dyspnea, chest pain, chest tightness, palpitations, shortness of breath, and fatigue, and syncope or syncope with aura during exercise, which are not specific to the disease, and the disease can be diagnosed by echocardiography and electrocardiography. Under echocardiography, the patient can be found to have a marked hypertrophy of the interventricular septum, which is greater than or equal to 15 mm, and the ratio of the septal thickness to the thickness of the left ventricular free wall is greater than 1.3-1.5. The anterior leaflet of the mitral valve shifts anteriorly during systole and is close to the interventricular septum; the left ventricular outflow tract is stenotic; and the aortic valve is partially closed during systole. QRS wave left ventricular high voltage, inverted T wave and abnormal q wave can be found under electrocardiogram, and some patients may also have concomitant intraventricular block and other kinds of arrhythmia. Hypertrophic cardiomyopathy is a disease characterized by asymmetric hypertrophy of the ventricles, which is related to heredity, and the preferred examination is echocardiography, in addition to perfect electrocardiography, X-ray, nuclear magnetic resonance, cardiac catheterization, etc.. If the patient has the above symptoms, it is recommended to consult a doctor in time to avoid delaying the condition.