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The detection of accelerator neutrinos and supernova(SN)neutrinos at the China Spallation Neutron Source(CSNS)had been studied in this paper.Firstly,by using the code FLUKA,we have simulated the production of neutrinos in a proton beam on a tungsten target and obtained the yield efficiency,numerical flux,and average energy of different flavors of neutrinos.Secondly,detection of these accelerator neutrinos is investigated in two reaction channels: neutrino-electron reactions and neutrino-carbon reactions,and the expected numbers of different flavors of neutrinos have been calculated.