Brand value plays a significant role in the brand management as one of the core elements, and it is also an important sign reflecting the differences among similar competing brands. The purpose of the evaluation of corporate brand value is to reflect the development of each corporate brand, so as to better allocate resources rationally and increase brand influence. The brand value AHP-EWM-TOPSIS evaluation model was established for the selection of the weights of all levels of brand evaluation and the determination of brand strength. AHP-EWM determined the comprehensive weight to realize the combination of subjective judgment and objective data, while TOPSIS calculated the size of the brand strength index to achieve a comprehensive ranking of corporate brand value. The relevant data of 25 listed packaging companies in 2018—2019 were selected for empirical analysis, which verified the validity and feasibility of the model.