Whether it is congenital heart disease or acquired heart disease after surgery, patients’ heart function recovery needs some time, reasonable diet and rest, correct medication after surgery is very critical, otherwise many patients may have heart function insufficiency, slow recovery after surgery, which affects normal life. When the following symptoms appear, you should seek medical attention promptly: 1. frequent feeling of activity intolerance, panic, chest tightness or purple lips after activity; 2. poor appetite, nausea or even vomiting, abdominal distension; 3. chest tightness and breath-holding at night, unable to lie down when sleeping; 4. little urine, dark color, and swelling; 5. unexplained fever; 6. frequent cough, thin sputum, or cough foamy blood sputum; 7. body When there is infection in any part of the body; 8. When there is bleeding tendency such as subcutaneous bleeding, hematuria, etc.; 9. When new arrhythmia occurs; 10. When sudden fainting, hemiplegia or lower limb pain, coldness, or pallor occurs.