We investigate modification of the dilepton production rate by the diquark
fluctuations that form well-developed collective modes near the critical
temperature of color superconductivity. Through the analysis of the photon
self-energy called the Aslamasov-Larkin, Maki-Thompson and density of states
terms in the theory of metalic superconductivity, it is shown that the
collective mode in the diquark channel affects the photon self-energy
significantly and thereby gives rise to an anomalous enhacement of the dilepton
production rate in the low invariant-mass region.