The purpose is to ensure painless and safe anesthesia and operation, prevent accidents and make the operation go smoothly. First, the choice of anesthesia method is based on the specific situation of the surgical site and the patient, taking into account the habit, experience and hospital conditions of the anesthesiologist. For example, local anesthesia is used for superficial minor surgery, general anesthesia for intracranial surgery, cervical plexus block for neck surgery, brachial plexus anesthesia for upper limb surgery, subarachnoid anesthesia for hypoumbilical surgery, epidural anesthesia for upper abdominal surgery, intratracheal anesthesia for thoracotomy, and subarachnoid anesthesia is not suitable for patients with unstable blood pressure and hypertension. Second, evaluate the patient's tolerance to anesthesia and surgery. Before anesthesia, anesthesiologists and nurses should visit patients to understand their health and general situation. Pay special attention to the functions of important organs in the whole body at present, and carry out corresponding treatment according to specific conditions. Third, psychological nursing surgery patients will undoubtedly have many psychological reactions, the pain and safety of anesthesia, the possibility of successful surgery, postoperative complications and so on. , can make patients have psychological barriers. Therefore, in order to dispel all doubts of patients and cooperate closely with medical staff, we should attach importance to and do this work well. Fourth, diet control In order to prevent anesthesia accidents, routine fasting 12 hours before anesthesia, and drinking water is forbidden for 4 to 6 hours. This routine should be strictly observed except for minor outpatient surgery. 5. Use drugs before anesthesia 1. Barbiturates have sedative, hypnotic and anticonvulsant effects, and can prevent and treat local anesthesia poisoning reactions. Commonly used are phenobarbital sodium 0. 1g, and intramuscular injection half an hour before anesthesia. 2. Analgesics can increase the pain threshold, strengthen the anesthetic effect, reduce the dosage of anesthetics and reduce visceral traction reaction. Commonly used drugs are morphine and pethidine. Morphine 5 ~10mg was injected subcutaneously and pethidine 50 ~10mg was injected intramuscularly. These drugs have inhibitory effects on the respiratory center, especially morphine, which should be used with caution by children and the elderly, and should not be used by pregnant women before delivery. 3. Anticholinergic drugs can reduce the secretion of respiratory tract, keep respiratory tract unobstructed, and prevent vagus nerve from being excited, thus avoiding sudden stop of bradycardia. Commonly used drugs are atropine 0.5mg and scopolamine 0.3mg, which are injected intramuscularly half an hour before anesthesia. Because these drugs can inhibit sweat gland secretion and affect cardiovascular activities, they are not suitable for patients with hyperthyroidism, high fever and tachycardia. 4. Diazepam can make mood stable, anti-anxiety, anti-convulsion, and has the function of central muscle relaxation, and has certain anti-local anesthetic poisoning effect. Commonly used are diazepam 5 ~ 10 mg or droperidol 5mg, which are injected intramuscularly half an hour before operation.