Research Findings: This national survey study aims to investigate the impact of the COVID-19 Pandemic on early development of rural preschoolers in China and compare the urban-rural gap. Participants were 11,282 rural preschool teachers recruited through the stratified random sampling method. They completed the survey online via wjx.com, the dominating online survey platform in China. We compared the results with our previous research on 22,466 urban teachers and found: (1) most preschoolers in rural China had development improvement during the quarantine; (2) there were no significant urban-rural differences in early development; (3) three distinct profiles of rural preschoolers emerged: the low, medium, and high levels. Those 3-4 year-olds in public preschools in western China tended to have development loss or even development regression; and (4) increased parental involvement was found the significant predictor of rural preschoolers' development improvement during the quarantine. Practice or Policy: The findings imply that more public support for rural families and communities should be provided to promote children's early development.