We study the following nonlinear fractional differential equation involving the -Laplacian operator ( ( ( ))) = ( , ( )), 1 < < , (1) = (1) = ( ) = 0,(1) = ( ) = 0, where the continuous function :denotes the standard Hadamard fractional derivative of the order , the constant > 1, and the -Laplacian operator ( ) = | | −2 . We show some results about the existence and the uniqueness of the positive solution by using fixed point theorems and the properties of Green's function and the -Laplacian operator.