It is one of the most important intangible assets of brand-name businesses, which makes the company's products differentiate with its competitors in the minds of customers. Brand equity is one of the brand-related issues that attracts a lot of attention. Various factors can be effective on the brand's particular value, and the dimensions of promotional activities are among these. This research aims to develop the validity and reliability of the model of promotional activities and brand equity in the Iranian apparel industry.This research is based on the descriptive-survey method for collecting data. It is an applied target that examines the effect between the brand equity value and the brand value of the whole. The statistical population includes customers who directly purchase from the stores and authorized clothing retailers of Majid, Technik, Edidas and Nike brands, of which 384 were selected as samples. The exploratory and confirmatory factor analysis was used by SPSS and AMOS software. The results of exploratory analysis showed that items related to brand equity questionnaire were classified into six factors of total value, brand awareness, brand awareness, perceived quality, brand preferences and brand loyalty. The items related to the promotional activities questionnaire were also included in the eight social media, awareness, advertising, oral advertising, verification, sales promotion, store image, event sponsorship, personal sales. A total of 60 questions were designed by exploratory factor analysis and verification of 25 questionnaire. In total, four questions were eliminated by exploratory factor analysis and two questions by confirmatory factor analysis.