Introduction: Illness, hospitalization and pain are often the first crisis that children are faced with ‎and painful procedure such as IV insertion is inevitable and the most cause of children distress. ‎Therefore proper pain treatment is one of the important goals in hospitalized children. Distraction as ‎a non-medical method is among independent nursing implementation which tends to soothe pain ‎with little cost and is attractive to children.‎

 Objective: This study aims to determine the effect of distraction on average heart rate resulting ‎from IV insertion in ‎‏3-6‏‎ year old hospitalized children. ‎ Methods: In this clinical trial study, ‎‏72‏‎ children admitted to emergency ward undergoing IV ‎insertion were randomly divided into two control and experimental groups to determine the effect ‎of distraction. During IV insertion, distraction was done with bubble instrument. ‎ Heart rate was measured and compared three minutes before and after intervention with pulse ox ‎meter.‎

 Results: The results showed statistically significant differences in the average heart rate (P< ‎‏0‏‎.‎‏01‏‎) ‎of children in two groups before and after the intervention which shows the effect of distraction.‎

 Conclusion: According to the research findings distraction with bubble decreases average heart ‎rate in ‎‏3-6‏‎ year old children and can be used as an effective method in pain control during IV ‎insertion in preschool children.‎