Abstract: To learn about the current situation of rural students' self-concept in boarding schools, by use of the Scale of Piers-Harris Children's Self-concept, a questionnaire survey was conducted among 221 junior school students from two rural boarding schools in the Mianyang City and 180 effective questionnaires were collected. Then the data collected were analyzed by SPSS 17.0. The results showed that students who start boarding from the first grade are found to be more sociable than those who start boarding from the third and sixth grade(F=3.1413,P<0.05); students who start boarding since the third grade are feeling more happy and satisfactory than those who start boarding since the 6^th grade(F=4.057,P<0.05); The girls are found to have a significantly higher level of anxiety than the boys(t=4.663,P<0.05). The unattended children have a higher level of anxiety than the attended ones(t=2.356, P<0.05). It is clear that the boarding school system is helpful in fostering students' interpersonal skills, yet still it makes no difference in relieving the unattended students' anxiety.