There are many studies on variables related to burnout among preschool teachers, but the results of these studies are inconsistent. This study explored the variables most associated with preschool teachers' burnout through meta-analysis. The researchers conducted an extensive search of the China Knowledge Network (CNKI), Vip journal, and Wanfang databases. A total of 59 papers were included through strict inclusion criteria, and a total of 14 variables were analyzed. The results indicate that the variables that have large effect sizes with burnout are turnover intention (r = 0.7124), job stress (r = 0.4744), teacher efficacy (r = -0.4331), and job satisfaction (r = -0.4229). This study provides a data reference for the prevention and improvement of burnout among preschool teachers in China, and will also provide directions for further research to follow.