An optical measurement system for simultaneous 3D surface profile and deformation measurement of micro-components is presented by using microscopic fringe projection and digital-image correlation technique. In the system, sinusoidal fringes are projected on the surface of the specimen by a grating phase shifting projector. The deformed fringe patterns are captured by a high-resolution CCD camera and a microscope. The images are processed with phase-shifting technique. The intensity of the specimen′s background before and after deformation obtained by adding the phase-shifting images are processed by digital-image correlation technique. This system will be useful for optical measurement of micro-structure. As an application, the system is used to investigate the mechanical behaviors of molded pulp material in micro-zone during tension testing.