The heart is hidden deep in the chest cavity and cannot be seen or felt. People can make accurate judgments about the heart by paying attention to the abnormalities and combining them with relevant examinations. People of all age groups, especially young adults, may have viral myocarditis when they have a cold or diarrhea and experience significant general weakness, shortness of breath when walking, and a calm pulse of more than 100 or less than 60 beats per minute, or unevenly fast or slow. When a person falls asleep and suddenly wakes up due to chest tightness and shortness of breath, followed by frequent coughing, increased shortness of breath, and coughing up foamy or red foam-like sputum, this is mostly a case of wind heart disease or high heart disease. In middle-aged and elderly people, sudden onset of symptoms such as boredom and crushing pain in the precordial region after overexertion, excessive alcohol consumption and emotional excitement are mostly suffering from coronary heart disease. If the recurrent attacks last for a long time, and the angina cannot be relieved by using nitroglycerin and heart pills, it may be the occurrence of heart attack. People suffering from chronic bronchitis, hypertension, anemia and other chronic diseases, once the lower extremities swelling and gradually upward, accompanied by panic, shortness of breath, difficulty in action, is likely to have involved the heart in the occurrence of chronic cardiac insufficiency. All of the above abnormal performance, is often the heart to send a “cry for help signal”, this should be promptly to the hospital for examination and treatment.