Introduction: one of oral disorder in childhood period is Nursing Dental caries. Causes of this disorder are Multiple. Aim of this proposal evolution of effect affectional Interaction mother & child is on Nursing dental caries. Method: For this proposal 250 children 2-5 years were randomly simple sampling selected & divided two equal group (case & control) Mother two child group filled design questionaire & data of this proposal was analysed. Result: There were not significant difference between affectional Interaction in two groups. Discussion and Conclusion: The result of this study shows the affectional Interaction has not effect on Nursing dental caries but for precise Judgment have necessary studding as longitudinal study. Pedodontic Depart dental school university medical sciences Isfahan, Iran.