Objection: The purposes of this study were to compare the discrepancy between the consultation actual waiting time and the perceived waiting time during hospitalization, and to explore the influence of factors on patient satisfaction. Method: The data of consultation actual waiting time was collected from the inpatient information system of the medical center. A self-report questionnaire was designed to collect perceived waiting time, the satisfaction of the consultation process, and interaction quality. There were 427 validated samples obtained. Consistency was estimated by using Cohen's Kappa analysis. Hierarchical regressions model with forward entry each control variable for predicting consultation satisfaction was performed. The control variables were included demographic data, length of stay, consultation waiting time, expected benefit, and interaction quality. Results: There were significant differences between actual waiting time and perceived waiting time (Kappa=.088, P＜.001). Perceived waiting time were negatively correlated with consultation satisfaction (r=-.214, P＜.01). The total predicted probabilities of control variables associated with consultation satisfaction were 61%. (Adj. R^2=.606, P＜.01). Conclusions: There were differences between the actual waiting time and perceived waiting time. Although patient perception may partially influence on the satisfaction of consultation, the interaction between physician and patient could be the most important factor to impact the overall consultation satisfaction during hospitalization.