Purpose: The purpose of this study was to identify the effects of the program to promote drinking knowledge, attitudes, and copingbehavior in preschool children. Methods: A quasi-experimental with non-equivalent control group pretest-posttest design was conducted. The participants were 123 five year old children from G city. They were assigned to the experimental group (n=77) or thecontrol group (n=46). A pretest and posttest were conducted to measure main variables. For the experimental group, the drinkingprevention program was given for 6 weeks. Data were analyzed using χ2-test, t-test, and ANCOVA. Results: After the intervention,preschool children in the experimental group reported significant differences in drinking knowledge (F=9.25, p =.003), drinking attitudes(F=19.57, p <.001), and coping behavior (F=16.38, p <.001) compared to preschool children in the control group. Conclusion:The results of this study indicate that a drinking prevention program for preschool children is effective in increasing drinking knowledge,attitudes, and coping behavior. This drinking prevention program is recommended as an effective intervention for preschoolage children to postpone an early introduction to drinking.