Abstract: The resent study was aimed to study the effectiveness of teaching parenting and behavior modification methods to mothers on the signs of separation anxiety in elementary-school children. The present research was semi-experimental. Moreover, it was conducted in two stages of pre-test and post-test for two groups: control and experiment group. A sample of 30 elementary students (grades 1-4) and their mothers was selected using convenience sampling method. In order to measure the level of anxiety in students, an anxiety sub-scale was used in CSI-4 parent form questionnaire and to evaluate parenting methods of mothers, Bamrind’s questionnaire was used.