Anterior chest pressure pain is caused by insufficient coronary artery blood supply and lasts for several minutes. Angina pectoris occurs when there is a conflict between the blood supply of the coronary arteries and the blood demand of the myocardium, and the coronary blood flow cannot meet the metabolic needs of the myocardium, causing acute and temporary ischemia and hypoxia of the myocardium. Angina is often manifested as pain in the anterior thoracic region, mainly located in the retrosternal or precordial region and radiating to the left shoulder and left forearm, and so on, which can explain the many different types of angina. So, what are the tests that need to be done when a patient presents with anterior chest compression pain? The following is a brief introduction: 1. The ECG examination during the attack is seen in the R-wave dominated leads with ST-segment depression and flat or inverted T-wave (in variant angina, the ST-segment elevation in the relevant lead), which gradually recovers within a few minutes after the attack. A stress test may be considered in patients with unchanged ECG. In case of atypical attacks, the diagnosis depends on observing the efficacy of nitroglycerin and the changes of ECG during the attack; if the diagnosis cannot be confirmed, the ECG, ECG stress test or 24-hour continuous monitoring of dynamic ECG can be repeated several times, and the diagnosis can be confirmed if the ECG shows positive changes or the stress test induces angina attack. 2. If the diagnosis is difficult, radionuclide examination or selective coronary angiography can be considered. Selective coronary angiography is necessary if surgical treatment is considered. Intracoronary ultrasonography can show the lesions in the wall and may be more helpful for the diagnosis. 3. Coronary angiography may also be considered.