Introduction: With regard to the admission of Hijab as one of the most important and fundamental principles of Islam for women, and its role in intellectual, political, and social independence, this study was conducted aiming at comparing the attitudes of young and middle aged people toward the superior Hijab. Method: This study is a cross-sectional survey; statistical population was 823 young and middle aged individuals who referred to the medical centers of one of the medical science universities of Tehran in 2005. The data was collected with the researcher’s prepared questionnaire and analyzed using SPSS 15 software, and statistical techniques such as frequency, percentage, mean, standard deviation and chi square.Results: There is significant difference (p<0.01) between the attitudes of young and middle aged population concerning the necessity of observing the Islamic Hijab by women, the degree of familiarity with the conditions of proper Islamic dressing, the best kind of Islamic dressing for women and restricting role of veil (or Chador) in performing their activities. Conclusion: Paying more attention to Islamic genuine culture and investment in cultural activities and giving real identity to Muslim women personality in order to understand and accept Islamic values and its proper transfer to the next generation is necessary.