The surface plasmon polaritons (SPPs) are electromagnetic excitation of electrons in metal surfaces, which propagates in wavelike fashion along the interface between a metal and a dielectric median.Recently Huck et al. reports on the efficient generation, propagation and reemission of squeezed surface plasmons.In this paper, the influence of waveguide loss was discussed for squeezed surface plasmons by means of the heat reservoir theory in quantum optics. Huck’s experimental result is explained theoretically.