This paper analyzes the mechanism of the impact of brand value on economic growth, gives a path of brands to influence production and consumption and ultimately promote economic growth. The number of brands and the country's economic growth in the Brics and four developed countries in the global brand value list has been analyzed, the results show that the two indicators have a significant correlation. Using the number of global 500 brands as proxy variables for brand value and using a country's GDP proportion of world GDP as the proxy variable of economic growth, the relationship between brand value and economic growth of these eight countries is studied empirically. The results show that brand value can drive economic growth significantly, for every 1% increase in the value of a country's brand, the country's share of GDP rose by 0.13%.