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We propose an attractive model that excess of electron recoil events around1-5 keV reported by the XENON1T collaboration nicely links to the tiny neutrinomasses based on a radiative seesaw scenario. Our dark matter(DM) is an isospinsinglet inert boson that plays an role in generating non-vanishing neutrinomass at one-loop level, and this DM inelastically interacts with a pair ofelectrons at one-loop level that is required to explain the XENON1T anomaly. Itis also demanded that the mass difference between an excited DM and DM has tobe of the order keV. Interestingly, the small mass difference $\sim$keV isproportional to the neutrino masses. It suggests that we have doublesuppressions through the tiny mass difference and the one-loop effect. Then, weshow some benchmark points to explain the XENON1T anomaly, satisfying all theconstraints such as the event ratio of electrons of XENON1T, a long livedparticle be longer than the age of Universe, and relic density in addition tothe neutrino oscillation data and lepton flavor violations(LFVs).

A radiative seesaw model linking to XENON1T anomaly