The study aims to determine the effectiveness of using the role-playing technique in the Professional Practice with Groups course to build the capabilities of female master's students in the Department of Social Work at Umm Al-Qura University. The current study belongs to quasi-experimental studies using the experimental method. The study was applied to (26) female students who are students of the program in The clinical track in the second year, and they were divided randomly into two groups with (13) female students for the experimental group, and (13) female students for the control group. A measure of the effectiveness of using the role-playing technique in the professional practice with groups course was applied, and it is a measure prepared by the researcher. The program was designed and prepared by the researcher and was implemented during the students' study of the Professional Practice with Groups course in the second semester of the year 1444. The study reached several results, the most important of which were: The study proved the validity of the first, second, third and fourth sub-hypotheses.