To examine the relation between parent’s educational aspirations and student’s mathematics achievement, a sample of 2745 fourth graders(1125 Han students and 1620 minority students) from western China was used. The results showed that: 1) Parent’s educational aspirations were positively correlated with student’s mathematics achievement. 2) Students’ self-educational aspirations,mathematics learning motivation and mathematics anxiety played mediating roles in the correlation, and "mathematics learning motivation"-"mathematics anxiety" was a mediational chain. 3) The pathways of parent’s educational aspirations influencing mathematics achievement differed significantly between Han students and the minority students. Firstly, the effect of parent’s educational aspirations on students’ self-educational aspirations was stronger in the minority students than that in Han students;secondly, the effect of parent’s educational aspirations on students’ learning motivation was weaker in the minority students than that in Han students.