Near-field Raman spectroscopy is a novel technology in the near-field optics, and attracts much attention of scientists because of the realization of spectral characterization of nano-structure. The technical advantage of Raman spectroscopy is described in the present review. The principle and practical technical scheme of near-field Raman spectroscopy systems are introduced. Several applications of near-field Raman spectroscopy are mentioned in detail, including carbon nanotube characterization, biological specimen imaging, thermoelectric crystal characterization, dye single molecule detection etc., revealing a broad prospect of the development of near-field Raman spectroscopy in various scientific research fields.
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