Since imagination can help studentschr('39') academic achievement and creativity and lead to the flourishing of talents and the development of ideas, the purpose of the present study was to validate the Liang, Su, Chang and Lin imagination questionnaire. The research method, correlation and statistical population of this study were all secondary school students in Ahvaz. 300 students (150 boys and 150 girls) were selected by multistage random sampling method. The Liang, Su, Chang and Lin imagination questionnaire were used to measure imagination. The results of exploratory factor analysis showed that 10 items in the form of two factors, creative imagination and productive imagination, constitute the imagination scale. Also Confirmatory factor analysis results showed that the components of creative imagination and productive imagination measured imagination with good power. The reliability and validity analysis of the imagination components showed that the questions were sufficiently accurate in measuring the imagination components. Cronbachchr('39')s alpha coefficients were reported between 0.66 and 0.70 which indicated that both components have the necessary precision in determining the structure of imagination. The results of this study showed that the questionnaire has good validity and reliability and is suitable for imagination. Imagination Questionnaire has acceptable psychometric properties in Iranian studentschr('39') community and researchers can use it as a valid tool in imagination measurement.