H. Qu - Department of Mathematics and Information, Hanshan Normal University, Chaozhou, Guangdong, ۵۲۱۰۴۱, P.R. China

In this paper, we prove the existence of the solution for boundary value prob-lem(BVP) of fractional dierential equations of order q ۲ (۲; ۳]. The Kras-noselskii's xed point theorem is applied to establish the results. In addition,we give an detailed example to demonstrate the main result.