Precautions for patients with congenital atrial defect are as follows: 1. Atrial septal defect is more likely to cause cerebral infarction, so patients with congenital atrial defect can take aspirin or warfarin drugs for prevention; 2. If patients show signs of decreased cardiac function, such as shortness of breath, dyspnea, or sudden chest tightness and lower limb edema at night, they need to consider whether it is caused by decreased cardiac function due to atrial septal defect, and need to seek medical attention promptly; 3. After atrial septal defect surgery, some patients may have arrhythmias, so they need to record electrocardiogram promptly after surgery.