Abstract: The Internet has become a crucial part of adolescent development, exerting a significant influence on their future development. While a number of studies have examined the effects of the Internet on adolescents' current physical health and academic performance, less attention has been paid to adolescents' long-term educational aspirations. This study focuses on the relationship between Internet entertainment use and adolescents' educational expectations, and explores the moderating effect of parenting styles. Based on the personal and household data from CFPS 2020, it is found that using the Internet for online games and short videos significantly reduces adolescents' educational expectations. Moreover, parenting styles demonstrate limited effectiveness in reducing the negative effects of short videos, but they show differential moderating effects on online games. Specifically, compared to the neglectful parenting, the permissive parenting tends to mitigate the negative impact of online games on adolescents' educational expectations.