When you suspect that you have heart problems, you can first go to the cardiology department of the hospital, and under the guidance of the doctor, you may need to improve the electrocardiogram, cardiac ultrasound, and if necessary, you can also conduct blood tests and coronary angiography, in order to make a comprehensive analysis of the condition. 1. 2.Heart ultrasound: Heart ultrasound can observe the structure and shape of the heart through imaging, and can meticulously observe the heart valve activity, atrial septal thickness, atrial cavity size and other problems, and make a comprehensive judgment of heart function; 3.Blood test: including electrolytes, coagulation function, myocardial enzymology and so on. Especially the cardiac enzyme index, which is an important marker of myocardial infarction, the change of cardiac enzyme is mainly used to clarify whether the subject has myocardial infarction and whether it will cause myocardial infarction, etc.; 4. Coronary angiography: through coronary angiography, the specific stenosis site and the degree of stenosis of coronary arteries can be observed, which can be used as a reliable basis for interventional treatment. In addition, the examinees can also use various examination methods such as coronary CT, myocardial biopsy, chest X-ray, myocardial scan and exercise test under the advice of doctors to comprehensively analyze whether the examinees have lesions and to guide the medication, surgery and other treatment methods to proceed smoothly and help patients relieve discomfort as soon as possible.