1, strengthen nutrition, actively correct anemia, low protein and other malnutrition, improve the ability of tissue repair. 2.Exercise bedside urination and defecation, clean local skin, keep warm, prevent cold, pay attention to dietary hygiene, and prevent gastrointestinal diseases. 3.Learn to master functional exercises in bed, such as stretching of quadriceps, plantarflexion and dorsiflexion of ankle and toe joints, chest expansion and deep breathing, effective coughing and back patting, etc. 4.Follow the doctor’s instructions to perform Chinese herbal fumigation to improve local blood circulation, soften scars, reduce secretions, control inflammation, and prepare for successful surgery. 5, smoking habits to quit smoking: because the nicotine and other substances in cigarettes are easy to damage the vascular endothelial cells, and platelet adsorbent, easy to cause vascular spasm and embolism, but also easy to cause antibiotics and other drugs to produce drug resistance.