  We study the quantum Seiberg-Witten periods of ${\cal N}=2$ superconformal
field theories which are obtained by taking the scaling limit of ${\cal N}=2$
$SU(N_c)$ SQCD around the superconformal fixed point. The quantum
Seiberg-Witten curves of these superconformal field theories are shown to be
classified into the Schr\"odinger type and the SQCD type, which depend on
flavor symmetry at the fixed point. We study the quantum periods and compute
the differential operators which relate the quantum periods to the classical
ones up to the fourth-order in the deformation parameter.
