The 24-hour observation after thrombolysis is to assess the effect of thrombolysis and prevent serious complications. Cardiac thrombolysis is mainly seen in acute myocardial infarction, thrombolysis treatment process, to strengthen the monitoring of vital signs, to understand the effect of thrombolysis, thrombolysis and recanalization process, there may be changes in blood pressure and heart rate, post-thrombolysis observation, you can understand the patient’s condition changes, once life-threatening situation, can be dealt with in a timely manner. Thrombolysis will have complications, the biggest complication is bleeding, 24 hours after thrombolysis is the high incidence of bleeding, to observe the patient’s skin mucosa, blood pressure, mental and other conditions, to prevent hemorrhage. During the process of thrombolysis, the physician will closely observe the patient to ensure the patient’s life safety and to judge the effect of thrombolytic therapy.