this study was designed to investigate the impacts of teachers self-disclosure on students foreign language classroom anxiety, attitude to english language learning and their achievement scores at the end of the term. there were 48 female learners of intermediate level. they were not randomly selected. there were one experimental group with 21 students and one control group with 27 students.these groups were not randomly selected to be experimental and control. to check the level of anxiety, flcas was used in both groups as a pre-test and as a posttest. and to check the attitude of students the questionnaire of attitude which was designed by monshi toussi (1998) was used in both groups as pre-test and as a post test.during the term the students of the experimental group received teachers self-disclosure as the treatment. in qualitative phase teacher observed the classroom and students behavior. the results of the two groups showed that teacher self-disclosure could reduce students anxiety, could improve their attitude to language learning, but could increase their achievem,etb scores at the end of the term.