In order to reduce postoperative discomfort reactions and deal with them in a timely manner, as well as to reduce the psychological pressure of postoperative patients and their families and enhance postoperative efficacy, please make sure to read and remember the following precautions: 1. postoperative blood in sputum and blood in snot: these are normal postoperative reactions. 2.Postoperative bleeding: the incidence is very low and the amount of bleeding is generally small. Treatment: Be calm, do not panic, cough with cold water 4-5 times, 3-5 minutes each time, more can be good. If the effect is not satisfactory, if necessary, blood transfusion or surgery to stop bleeding. 3, postoperative breathing difficulties: if necessary, re-tracheal intubation or tracheotomy, the possibility of low 4, postoperative blood pressure fluctuations: especially with a history of hypertension, please cardiology treatment. 5, postoperative nasal feeding: more liquid food (eggs + milk + fish soup + broth + juice) 6, more cold water with mouthwash, drink more water: help clean the incision, reduce infection, promote healing, reduce bleeding, reduce pain. 7.Short-term post-operative: more secretions, foreign body sensation in the throat, cough, low fever, is a normal post-operative reaction. Postoperative anti-allergy drugs and drinking more water can reduce the symptoms. 8.Encourage side sleeping and bed activities, and get up and move around if possible. 9. Encourage light coughing of sputum after cold boiling water. 10.Postoperative pain: about 10-14 or longer, cold boiled water with mouthwash can reduce, pain is obvious: use some painkillers.