The present study aimed at developing preparatory stage students' EFL reading strategies through think aloud strategy. The participants of the research consisted of 60 students of the second year of the Ahmed Foad Frag preparatory school, shobra khalphon , Shebin Al-Kom Educational Administration ,Al Menofyia Governorate . This research adopted quasi experimental design. The participants were divided into two groups; 30 students served as an experimental group and 30 students as a control one. To determine the most essential and required EFL reading strategies for the participants. A pre- and a post EFL reading strategies test was prepared. The participants were pre-tested to determine their level of EFL reading strategies. Then, the experimental group was taught the reading strategies through think aloud strategy, whereas the control group was taught using the Ministry of Education teacher's guide (traditional way). After the implementation, the two groups were post tested. The results revealed that the EFL reading strategies of the second year prep stage students were developed significantly as a result of using think aloud strategy . Thus, it can be concluded that using think aloud strategy was effective in developing the EFL reading strategies of the second year prep stage students.