Background: Therapeutic communication between clinical students and patient is very important to provide a qualified health services.Petients often complain and feek dissatified towards health service provided by clinical students due to poor therapeutic coomunicaton. Moreover, same clinical students tend neglest the importance of communication with patients. Research Objective: To know the correlation of study period with therapeutic communication skill of Clinical students at RSGM UMY. Research Method: The research type used in this research was analytic observational with cross sectional research design. The population of this research were 195 professional college student‟s patients by using the calculation of proportionate stratified random sampling and 131 samples according to inclusion criteria were obtained. Research Result: In this research, the number of patients is 131 patients who are mostly women by 73 patients (55,7%). The predominant age range of the patients is 17-25 years old by 96 patients (73,3%). High school as the latest education level of the patients is commonly observed in 88 patients (67,1%). This research result indicated that p value = 0.195, which meant p > 0.05 based on Pearson test. Conclusion: There was no significant correlation between study period and therapeutic communication skill of professional college students at RSGM UMY.