Purpose : This study was conducted to understand the experiences and perceptions on informed consent of the inpatients, doctors, and nursing officers in military hospitals. Method : Six hundred sixty four inpatients, 126 doctors, and 230 nursing officers from five military hospitals were surveyed, and frequency, percentage, median, and standard deviation were calculated to analyze the data with SPSS/PC version 12.0. Results : 1. Awareness of the necessity of informed consent was high among the participants, and 47.1% of inpatients, 39.7% of military doctors, 57.4% of nursing officers responded that the patient had the legal right to consent before any medical procedure. 2. 84.5% of inpatients, 77.8% of military doctors, and 90.8% of nursing officers responded that the decision to receive any medical treatment lies with the patient, whereas only 9.9%, 14.3%, and 7.0% of inpatients, military doctors, and nursing officers, respectively, responded that the right to make the decision lie with the doctor. 3. 60.4% of military doctors said that they had their patients sign the consent form, and 34.4% said that they entrusted the process of informed consent to others such as nurses, medics, and other doctors. 4. 81.9% of the patients signed the forms themselves. 78.1% signed it after listening to a detailed explanation, whereas 10.2% signed it without such formalities, and 4.9% did not sign but agreed in words. 5. Knowledge of the surgeon’s profile and the explanation of alternative regimens were not perceived to be important or necessary to both the patients and doctors. 6. 45.4% of the patients signed consent forms the day before a diagnosis or surgery, and 42.5% signed forms a couple of days before medical procedures. Conclusion : By modifying identified weaknesses in the practice of informed consent before medical procedures, we can increase the awareness of the patients’ right to make decisions autonomously.