Problem Based Learning is one of the learning models that contain the general principles of active learning and students can use scientific process skills. Within this research it was aimed to investigate in detail the postgraduate thesis held in Turkey about PBL approach. The content analysis method was used in the research. The study sample was consisted of a total of 64 masters and PhD thesis made between the years 2012-2013 and reached over the web. A “Content Analysis Template” prepared by researchers was used with aim to examine the thesis. All the thesis were examined and classified in the computer environment. As a result of the investigation, the topics, study groups, data collection tools and data analysis methods and techniques of the thesis made in Turkey about PBL research to be similar in terms, as well as quantitative research methods and experimental models has been shown to greatly preferred.