Ecological restoration in karst areas is of great significance for ecological promotion of territorial space and regional ecological security. Based on the survey data of 383 households in Youyang County and Yanhe County, a Tobit model has been used to analyze the impact of rural labor migration on ecological restoration in karst areas from the micro household level, and great attentions have been paid to the impact differences of ecological restoration in the two counties. The results showed that:①The phenomenon of rural labor migration in the study area was prevalent, 47.67% of rural labor force has migrated; ②The ecological restoration in the study area was generally good, but ecological restoration in Youyang was better than that in Yanhe; ③The rural labor migration promoted the ecological restoration in karst areas through the loss effect of agricultural labor and the substitution effect of non-agricultural income; ④Different degrees of labor migration exerted different degrees of impact on ecological restoration. The relatively lagging labor migration in Yanhe made its ecological recovery slightly weaker than that in Youyang. In order to promote the ecological restoration in karst areas, local governments should orderly guide the rural labor shift to off-farm sector and improve the non-agricultural degree of migrant households.