In clinical practice, for patients with myocardial infarction treated with thrombolytic therapy, whether the patient’s occluded vessels have recanalized can be determined by the following four indicators: First, the patient’s conscious symptoms can be judged, and if the patient’s chest pain is relieved significantly after thrombolytic therapy, the patient’s occluded vessels are considered to have recanalized. Secondly, the patient’s ECG changes can be judged. If the patient’s elevated ST-segment decreases by 50% or more after thrombolytic therapy, the patient can be considered to have recanalized the occluded vessel. The third point can be determined from the patient’s cardiac enzyme profile. If the patient’s peak cardiac enzyme is advanced after thrombolytic therapy, the patient can be considered to have recanalized the occluded vessel. The fourth point can be determined by the presence of reperfusion arrhythmias after thrombolytic therapy, such as ventricular arrhythmias and loss of atrioventricular block after thrombolytic therapy, which can also be considered as revascularization. In patients with myocardial infarction with thrombolysis, coronary angiography is still recommended to further evaluate the patient’s coronary condition.