Abstract: With high-energy external source, the proton energy of accelerator driven sub-critical system (ADS) is up to GeV, and the energy of spallation neutron which is produced by the spallation reactions has great energy spans. Due to the lack of high energy nuclear library, the nuclear analysis of ADS design was based on the below 20 MeV neutron nuclear library. This paper was mainly based on the Japanese JENDL-HE-2007 high-energy neutrons evaluation library, using the NJOY to produce the ACE format data library of some key nuclides named NECL-HE/MC. Meanwhile, to validate NECL-HE/MC nuclear library, the high-energy physics model of MCNPX and NECL-HE/MC nuclear data library were compared. The results show that the NECL-HE/MC nuclear data library is reliable for ADS design. On the other hand, the effects of the different energy spallation neutron sources on the ADS external neutron source efficiency were analyzed with the application of the NECL-HE/MC. The results show that the above 20 MeV energy spallation neutron source which is 2.5% of the total number of spallation neutron source, contributes to about the 20% of the total external neutron source efficiency.