1. Cardiomyopathy is an organic disease of the heart muscle due to many reasons, and cardiac color ultrasound can detect cardiomyopathy through ultrasound observation. 2. Cardiomyopathy mainly includes dilated cardiomyopathy, restrictive cardiomyopathy, hypertrophic cardiomyopathy, etc. Dilated cardiomyopathy can be manifested as enlargement of ventricle in cardiac ultrasound; restrictive cardiomyopathy can be manifested as enlargement of atria and reduction of ventricular end-diastolic inner diameter in examination; hypertrophic cardiomyopathy can be manifested as hypertrophy of myocardium, so the cardiac color ultrasound can be found out cardiomyopathy at first. 3. Diagnosis of cardiomyopathy, in addition to cardiac ultrasound, but also need to carry out electrocardiogram, chest X-ray and other tests, myocardial biopsy is the gold standard for the diagnosis of the disease, found uncomfortable timely medical care.