Situated within a cohort of Chinese preschool teachers’ emotional experiences, this study shows that preschool teachers’ emotional labor is characterized by its long duration, high intensity, and diversity in emotional interactions. The findings also reveal three rules governing preschool teachers’ emotional labor, including being adept in emotional control, active use of emotions, and keeping smiling service. In response to these rules, preschool teachers regulate their emotions with four major strategies of disguising, restraining, self-persuading, and releasing. The paper concludes with implications on how preschool teachers’ emotion regulation can be better supported.