As the largest industry that absorbs labor from different levels of employment and provides different levels of labor remuneration, the service industry has faced severe challenges from the wave of artificial intelligence replacement. This study examines whether artificial intelligence promotes shared prosperity among service industry enterprises based on microdata of listed companies in the Chinese service industry from 2008 to 2022. The main research results indicate that the application of artificial intelligence in the service industry significantly reduces enterprises' labor income share. The main mechanisms of action include the employment structure effect of squeezing out low-educated and frontline workers and the wage-productivity effect that improves labor productivity but benefits capital income, leading to an unequal income distribution. Research has found that improving the integration of regional labor markets and workers' bargaining power can help alleviate the negative effects of artificial intelligence applications on the share of labor income in the service industry. This study helps developing countries, such as China, manage the impact of the widespread application of artificial intelligence on the labor market in the service industry and provides important policy insights for achieving common prosperity.