the present study was conducted to investigate the role of summary in teaching grammar process on pre-university students. to this end, 48 male pre-university students in semnan were participants. they were math class that we called experimental group and science class as control group. in order to make sure there was no significant difference in proficiency level of two groups. a pre-test was conducted after 20 sessions and then on experimental group the strategy of teaching grammar with summary way were used to find out whether there was any significant difference on learning grammar of two groups.after the end of experiment the post-test were used, to findout whether there was any significant difference on learning grammar of two groups. then the result of two groups was compared to investigate the difference between them. result of the data analysis indicated that there was meaningful and positive relationship between control group and experimental group. in fact the scores in experimental group who taught with summary waywere higher than the control group whotaught with common way. furthermore, for validity and reliability of tests pilot study were used.