Background: This study was carried out to contribute to effective management of operated patients by analyzing cooperative details about patients who were taken elective operation and consulted to the department of anesthesiology. Patients and Methods: One thousand patients who have been consulted to department of Anesthesiology, Chonnam National University Hospital from 2008. November to 2009. March were analyzed. The gender, age, cooperative departments, cooperative reason, the number of cancelled cases and cancelled reason were evaluated. Results: Among 1000 patients, there were 470 females and 530 males. After adjusting for age, middle-aged people which range 45 to 64 year-old are 39.9% and over 65 year-old people are 30.3%. Cooperative department is distributed to orthopedics which is highest occupying 20.6%, neurosurgery, otorhinolaryngology, obstetrics and gynecology in order. Dentistry occupied 2.0%. By specifying reasons of cooperation, cardiovascular diseases distribute to 38.4% which is the highest, the respiratory diseases, 17.5% and the endocrine diseases including diabetes 13.2%. Arranging details, hypertension is 23.9%, ECG abnormality 14.5%, chronic bronchitis in chest radiographic interpretation 14.2%. Of 1,000 consulted patients, delayed or cancelled cases are 58. And the reasons were 26 cases of need of appropriate the blood-sugar level. 26 cases needed appropriate treatment for comorbidities and others 6. Conclusion: Thoroughly evaluating patients before operation and maintenace of active cooperative system between operative department and anesthesiology department can contribute to reduction of cancellation rate and effective management of both hospitalizing and operating rooms.