Abstract: This study focuses on children's sense of hope in western counties. Based on the survey data of middle school students in 23 schools in N county, in western China from the research group, it analyzes the influence of parental involvement on children's sense of hope. It is found that parents' emotional involvement, and mothers' cognitive involvement have significant positive effects on children's sense of hope. From the perspective of gender, there is no significant gender differences with the effect of parents' involvement on children's sense of hope. From the perspective of left-behind state, the difference of the effects of parental involvement are not significant; from the perspective of left-behind distance, for the children left behind by both parents, having one parent in the province dramatically reduces the father's behavioral involvement, but significantly increases the mother's behavioral involvement. Based on this, the paper puts forward some policy suggestions from the aspects of strengthening the propaganda and guidance of family education, promoting the development of characteristic industries, strengthening the support for left-behind families through the power of schools and communities, and promoting the development of children's sense of hope in western counties.