We report on the imaging of localized electric field on a metal/dielectric interface of gold nanorods irradiated out of their resonance. The surface polarization charges caused by the discontinuity of electric field at metal/dielectric surface provide a tiny local field enhancement. At some precise positions on the nanorod surface, the resulting effective local field intensity becomes high enough to overcome the threshold dose of a photo-sensitive formulation, and hence the polymerization process is initiated. We finally end up with a cross-linked 3D polymer structure that is actually molding the spatial distribution of the surface charges held on the metal/dielectric interface.