A survey was conducted on 170 outpatients' waiting time and their satisfaction level. Average waiting time which was regarded as permissible by respondents was18minutes for reception, 37minutes for consultation, 23minutes for examination, 10 minutes for calculation of bill, and 68 minutes for hours spend in the hospital. The actual waiting hours for consultation, examination period, and hours spent in the hospital were longer than those of the “permissible” waiting time. The percentage of outpatients who waited for less than the“permissible” waiting time was 45% for waiting for consultation and 38% for hours spent in hospital, respectively. Satisfaction survey revealed that “waiting for consultation” received the least satisfaction level, i.e. average 3points of maximum 5 points. Satisfaction level for out-patient clinic was correlated to satisfaction level of doctor's attention and consultation waiting time. It seems important to investigate “permissible” time and patients' satisfaction level as well as actual waiting time to evaluate the impact of waiting time on patients' satisfaction.