The process of open-heart surgery for ventricular septal defect has the following steps: 1, first of all, general anesthesia should be administered to put the patient under anesthesia; 2, open the chest cavity, generally choose the middle part of the sternum to cut open and expose the heart; 3, use the stopping fluid to put the heart in a state of arrest, then cut open the pericardium to expose the defective ventricular septal part; 4, repair the defective part, and after the repair is finished, start to instill the heart Resuscitate fluid to make the heart beat again; 5. Close the chest cavity and gradually withdraw the anesthetic drugs for observation; 6. Gradually observe the patient’s breathing and consciousness state, if the heartbeat is restored, consciousness is restored and autonomous breathing is restored, it means the operation is successful, and then you can leave the operating room and return to the ward for observation.