A microscope using surface plasmon resonance is described, which images 2-D distributions of refractive
indices and/or surface proffles of dielectric specimens. Surface plasmon is excited at a metaldielectric
interface by using the Kretschmann's configuration, which consists of a glass prism deposited
with a thin silver film and a specimen. This microscope gives the distribution of the refractive
index with high sensitivity, if the specimen is in contact with the silver film. In experiments, we imaged
such objects as biological tissues and optical wave guide.