Super-inflation driven by dilaton/moduli kinetic energy is naturally realized in compactified string theory. Discussed are selected topics of recent development in string inflationary cosmology: kinematics of super-inflation, graceful exit triggered by quantum back-reaction, and classical and quantum power spectra of density and metric perturbations.

• Soo-JONG REY(Department of Physics, Stanford University, Stanford Linear Accelerator Center, Stanford University, Physics Department, Seoul National University)