To summarize the nursing of a diabetic patient with gas-forming retroperitoneal abscess and invasive hypervirulent Klebsiella pneumoniae syndrome. Key points of nursing：rescue of ketoacidosis complicated with septic shock；observation and nursing of gas-forming retroperitoneal abscess；nursing of subcutaneous emphysema and cellulitis；stepwise nutritional support and blood glucose management；rehabilitation nursing of ICU-acquired weakness；precaution against pulmonary embolism. After treatment and nursing，the patient’s condition improved after 68 days of hospitalization，and was transferred to a rehabilitation hospital. The patient was reexamined and recovered well 1 month after discharge.

To summarize the nursing care of a patient with coronary heart disease complicated by hepatic artery pseudoaneurysm after hepatopancreatduodenectomy. Nursing points include：to strengthen the observation and nursing care of the disease,to be alert to the occurrence of acute coronary syndrome,to pay attention to early warning sentinel bleeding,to implement nursing care during conservative treatment of hepatic artery pseudoaneurysm,and the prevention and nursing care of complications after interventional treatment. After careful treatment and nursing care,the patient recovered after 78 days of hospitalization.