The City Brand Valuation Model (CBV model) established by the Global City Lab aims to estimate the brand value of a city through more comprehensive and advanced evaluation indicators to measure the brand strength of major cities in the world. The "Global Top 500 Cities" list is compiled based on the city brand value calculated by the CBV model. The evaluation of the city brand value in the Global Top 500 Cities List involves an analysis of the city's performance in six dimensions: economy, culture, governance, environment, talent and reputation. The Global City Lab innovatively incorporates city reputation indicators in the evaluation process, which helps us understand the city's brand image with more details and assess the city's external value and the future potential of brand development.