Bachground: Many factors are obviously associated with the overuse of antibiotics at mother's children less than 7 aged. In this study we assess the levels of knowledge,Attitude and practice of mothers about antibiotics use in children less than 7 aged, as well as to identify the contributing factors for inappropriate use.

Materials and Methods: In this cross-sectional study included, 255 mothers with children less than 7 aged between 2012-2014 They provided their demographic characteristics and completed a artificial questionnaire in regards to their knowledge ,attitudes and practice about antibiotics use in children less than 7 aged. Data were recorded with SPSS software for Windows V. 19 and P<0.05 was regarded as significant statistic results.

Results: The knowledge levels of mothers were 57 (22.4%) poor, 144 (56.4%) moderate, 54 (21.2%) good, attitudes levels were 30 (11.7%) poor, 159 (62.5%) moderate, 66 (25.8%) good and practice levels, 48 (18.9%) poor, 129 (50.5%) moderate and 78 (30.6%) good. Employment mothers and mothers with history of hospitalization in her child had significantly higher knowledge ,attitudes and practice levels (p<0.05).

Conclusion: It seems that, To develop successful educational interventions, it is nessecery to understand the factors causing inapproprate use of antibiotic and increasing of Knowledge, Attitude and Practices of the Mothers for children less than 7 years.