The electromagnetic field in absorbing and dispersive dielectrics is quantized by the method of Green′s function, the quantum properties of light field in the plane interface system with the plasma / absorbing and dispersive dielectrics for one-dimension are investigated. The results show that the working states of the system are related closely with the frequency of light , and the damping of plasma have not only the effects evidently on the power spectrum of electric- field quantum fluctuations in myself region , also in other region.