This article illustrates the nursing experiences of a patient’s re-admission due to intra-abdominal abscess at anastomosis leak following bariatric surgery. This problem gave her physical discomfort and severe emotional stress. The nursing interventions focused on helping her face negative emotional behaviors. The nursing period was from April 24 to May 4 in 2014. An assessment by Gordon’s 11 functional patterns and skills in observation, interview and physical assessment, and the patient’s data were collected. The main nursing problems analyzed and induced were existing infection, acute pain and anxiety. During the nursing period, interventions including relaxation techniques, slow deep breathing, and video entertainment alleviated her pain. As for diet, teaching her gradual intake of food and observing the reactions at each meal were conducted. Explaining the treatment plan to the client by team work could reduce her anxiety to finally restore her physical and mental health. Through the client’s nursing experiences, it is suggested nursing staff not only take care of patients post-operation but also teach patients to personally observe the complications after surgery for improving self-care abilities and life quality.